About 20 years ago when I was coaching the Blind in Lawn Bowls I crossed a common problem of the 90s where coaches believed that there was only one way "Method" to holding and the delivery of the bowl up the green to the Jack. My first blind student had been instructed by a National athlete who was also a coach. Many individual with a visual handcap also has other physical difficulties and I was surprise to find that this blind student had been build a wrist strap to keep her delivery hand straight.
If it had been a weak muscle problem and this leather wrist band was created to offer a muscle support, it would have been easy to accept; but it was more a "keep your fingers straight" instruction of the coach device. Yes the way the bowl is held in the had make for a good and natural delivery. My self, having come to lawn bowls from archery and over those 15 years, when I had developed my archery and my arrow release; created wrist muscles changes. Although I won gold at Nationals competitions, the Arrow release and arror grip had resulted in a wrist "Relax Muscle" of a 45 degree angle. Therefore, my lawn bowl delivery wrist and holding of the Bowl required me to develop a "Bowls Release" much more like a common United Kingdom bowl grip and delivery.
The common mistake, this coach made, is to try to change the natural delivery of the student to what the coach would call " the perfect textbook delivery grip". By using this leather wrist brace, what the coach had done to that blind student, was, in my opinion, WRONG. Instead of finding a proper delivery with the physical limitation, but natural wrist limitations; the coach showed the limited view of her role as an instructor. Very often as we encounter problems on the green and we attempt to change what we feel is wrong; instead of understanding the difficulty of the student and then creating a "Bowl's Performance" for them, which accepts or uses that physical problem.
Back to the topic of this blog. " Bias and Off-Bias Delivery". Since we can only alter the bias of a bowl in our hand in one direction, we often hear this called a "Reverse Bias" grip. One of the most common problems in a delivery performance is a "Ridge" or "Slope" which seems to pull the bowl quickly off line or across our normal "Delivery Line". In other blog I explained "Line of Delivery is the direction you aim your bowl for it's delivery: while "Line of Delivery" is the direction your bowl actually rolls up the green as it leaves your hand. (This line is what you see as your bowl begins it roll and is part of a Post-Delivery analysis of your delivery)
As a solution to having a Ridge or Slope influence on your bowl as it rolls up the green in your "Delivery Line"; we can sometimes "Walking the Mat" for those few inches needed to have our bowl pass just inside (our outside) of the problem area of the green. When beginning to play that direction, the next time when placing the mat, we can bring it up from the "Mat Line" a few feet which will not change the "Line of Delivery" for the Jack positioned on center line. But, then again there are times that a "Ridge" or "Slope" can not be avoided. And for me it does not help being a left-handed bowler, as my right-hander opponent delivers their bowl almost two feet further right. I guess this same happens on other occurances when being lefthanded avoids areas of play which the normal righthanded playes can not actually avoided.
Then again, I love my old 1960's Hensilite Classics IIs with their wide bias (#3). Always perfecting my deliveries, over the years I have developed an "Off-Bias Draw" Delivery which some years I seldom needed to use. But this last weekend, it was a end-green on which I did my local competition. Normally as an "End-Green" which gets a lot of traffic because of Mat palcement; it would run to the ditch if a wide bias was to take the bowl outside of the "out-of-bounds Line. But this green was so bad that as my bowl roll which needed to approach the out-of-bounds limit (on the "Ditch side" ); my bowl returned, then crossed "Center Line" and continued and finally stopped on the opposite "out-of-bounds" line. Ofcourse, although rarely used I had my ability to use the "Off-Bias" Delivery. I was glad to have developed my "Off-Bias" Draw. (A Off-Bias Delivery may slow the bowl's delivery speed ( a light wooble), and it is there important to know this weight loss and adjust needed for it to be used correctly)
This Delivery type allows my bowl run Straight for 2/3 the distance to the jack before it has slowed enough to begin the bowl's Normal Bias to the jack. In the past the use of this delivery allowed me to work around rises and falls of the greens in early spring. Often referred to as "Ridge" or "Slope" by players, the normal bias of a bowl without a "Straight Bias"; often fights with the green in spring and might need at least a three feet off the jack line . In an earlier blog I had show how to "Finger Jack" my new line when wanting to know if the new jack position has creates a delivery line which must run through a "Ridge" or "Slope". In this case I did not have a the same problem but the Ditch beyond the limit was to be avoided. I could not simple play a Out-of-Bound and return Delivery.
This trick is not for beginners but allows a player to know their new "Delivery Line" after a jack had been moved. I would want to know that my bowl would still pass inside of the "Fall to Ditch" limit.(ultsded to see if "Line of Delivery" allowed the Bias "Shoulder" to start 2/3 distance up the green. I ofcourse,have a visualize image of where the bowl's bias takes the it's "Shoulder" of the Bowl's Bias. (The belly is the first start of a Bowl's Bias swing which I wanted to avoid having to use.(as it would have taken my bowl to the Ditch.) A bowl which runs Off-Bias" can avoid the top of a ridge and is staying straight because the "Reverse Bias" is forcing the bowl to stand straight and eventually when the speed is slow enough to pull the Bowl onto it actual Bias Line. This trick to see the new line, if done properly will not be seen by others but will allow you to know how your bowl will run with that line you are expected to use. Otherwise, we would roll a bowl as a "Trial End Bowl" and waste it to know something needed for the performance. (A wasted bowl which be saved as most problems can be thought-out and adjustment properly made.
I would want the Bowl Delivery Line to show that my bowl will actually pass straight toward that "Ridge" before the bowls speed becomes slows enough to work the Shoulder of the Bowl's Bias. By using the Off-Bias delivery, you would want to have your bowl stay straight for about 2/3 of the jack distance which would then passed the top of the ridge . Also because the off-bias draw will wobble for that 2/3 "Reverse-Bias", you must know the lose of speed due to the bowl's wobble. A 1/3 Reverse-Bias has less delivery speed lost because it only is attempting to re-position it's apex (center) before beginning it bias to the jack. To know how much more weight is needed is a lesson to be learn on the Practice green as you still want a good draw to the jack with your off-bias draw,
In using the finger diagram above, to know the new line after the jack has been oved is for each individual to find their own reference on their hand. Myself, I go from halfway between thumb and kunkles and just to the bend of last joint. Someone else might use upper joint/wrist or tip of finger. As it is just a reference of the new Line of Delivery", you don't need to hold your hand up as if finding a point of aim. It is your knowing your bias of your bowl to the jack and the purpose is to know if the ridge or problem area of your "Delivery Line" needs a worry as your bowl rolls up the new green. It is a trick which maybe will be used only one or twice a season, but better than wasting a bowl guessing the affected by the "Ridge" or "Slope" you are wanting to avoid.
For the beginner wanting to understand "Bowls Bias", I suggest the Colemans Hatch Bowling Club web page from which I took the following Bias Chart and edited by removed several bowls to explain the different types of Bias. For the Youtuber there is also a "Everything you want to know about Bias. video which is
helpful. The Bias Chart (suggested) has be modified with a 2nd chart added to show the three bias of bowls. On the older manufactured bowls this could be seen by the circle lines on the outside of the bowl, but several of the newer bowls are now appearing without these lines.I have not seperated the chart bowls into Outdoor and Indoor Bowls bias although the straighter bowls may be consider indoor carpet bowls. The last time I had to use the Off-Bias Draw was on a boundry green. Normally with my wide bias Hensilite Classic I had to go from mat-line to the out-of boundry line for the bowl's bias. But on this competition my bowl after approaching the Out-of-bound Line would swing back, cross center line and even go out-of-bound on the other side. My only choice was to use my Off=Bias Draw and after moving as far right (lefthanded me) as possible on the mat I check if my line stayed inside the top of the ridge. The inside side of the rink was often blocked as it was used to attempt to get a bowl near the jack.
When you arrive to start a game, you should take the time to know the bowls of your teammates and the Opponent. Most all manufactures make three types of their bowl's Bias. Although certain manufactures have a bias with less Finish or Shoulder the principle is the same. Narrow Bias bowls of the Name type are usually with very little shoulder or finish and intended for fast greens or indoor bowls. The bowls Bias Chart will show the "Medium" bias of their bowl and may even be marked with MB in the "Stamp". The "Wide" bias bowls are seen to have a good shoulder and finish and if you find a older bowl (Henslite) of the 60s you may even see a "Candy Cane" type bias which swings more then today's Bowls.
As per the photo of the bowls (right) we see three different bowl's Bias and two Manufacture. (white Aero and Black Henslite). The Narrow Bias bowl (white) will have some bend but only about 4 to 6 inches and not finish. This bowl of Aero is usually a good bowl for a lead as no bowls are yet on the green to prevent a direct line to the jack. The brown bowl (top) with two lines is a Medium Bias and if you look at a Bias chart for the manufacture this bowl's line will be what is shown. It has some finish. The Black bowls (bottom) with three "Bias Lines" show a more wider swing as the shoulder swings almost a foot to 18 inches of the center line. Also with a green of good speed (16-10) or an indoor carpet it will have a good finish curve as it stops.
Below is photo of my grip which is not standard because of muscle changes from Archery over many years. The white lines drawn on the photos is to indicate the bowl is in it correct line of delivery. The edges of the bowl or the nipples or sides of the bowl should be such they parallel the sides of the arm. The photo below show the delivery grip I had to adapt and use for a smooth delivery. It is to indicate that without changing everything in a student or new members delivery style; a good delivery is possible.
Also a photo of my 1/3 off- bias delivery grip. The 1/3 makes reference to what part of the bias which is being removed by the delivery. One third of the total length to the jack is not much of an "off-bias" and the bowl will roll of the mat with very little wrobble. But there is still some bias in the "Straight" of the bias.
Where the wobble and action of the "Off-Bias" Draw is noticable is on a 2/3 Off-Bias draw (not shown). Here you will see the wrobble more as the bowl rolls up the green. A 1/3 off-bias would be used for a shorter jack, and a 2/3 Bias Draw for a longer distance to the jack. The greater the noticable wobble the more delivery weight that will be lost. You will see the bowl roll almost straight and then take the last two parts of the Bias after nearing the jack.. A full off-bias delivery (3/3 of the distance is all the way to the "Jack"; and is usually used for "Runners" and very heavy takeout shots. Remember, the bowls Bias starts at a very slow speed and with a runner it will spend all it green time attempting to re-dress to the standing Bias position.
In Video of "Heavy Over-Draws" you will often hear the expression of "Let your Bowl Work the Bias" which is very important in planning a "Off-Bias Draw". It is certain in times of slow greens (spring, Rain, Dew,etc) the "Finish of the Bowl" will be very little as a good "Finish need time to work" which will only happen on a fast green. Bowls is a "Draw, Draw Game" and these once in a difficult time performance skills are there when you find that everything else has failed. A good smooth roll delivery is always the best results to be expected. Very Strange stats yesterday.. Glad someone is asking the right questions.


























