I recently finished two weeks practically living at
the James Gardens Lawn Bowling Club. I kept almost regular business hours so
that new bowlers would know that the club was open for their free trial,
practice, and/or instruction. I took two days off during that spell so I could
play in a couple of open pairs tournaments; otherwise-at the club-at the club!
During this volunteer spell, there was plenty of free time for personal practice. I discovered that if I turned my wrist in to my body on the backswing my line corrected so that I could aim directly at a mark on the front ditch rather than having to trace a line back and pick a stare point about five meters out from the mat on the green. However, after trying this in a few matches I have returned to my previous delivery completely.
Where I did find this turning the wrist inward helpful was in casting the jack. On the slow Canadian grass, I was finding it difficult to roll the jack a full length green, from T to T. To achieve this I needed a very high backswing, where the bowling arm was coming well above the horizontal position. This was only comfortable when I turned my wrist 90 degrees in to my side as it passed my leg and then another 90 degrees as my hand reached its highest point. For comparison, on a representative Eastern Canadian green, to deliver the jack to the hog line (21meters) I needed only a 45 degree backswing. But whatever the length, the delivery was straighter and more fluid when my wrist is twists during the swing.
When done to deliver a bowl this is called the Bryant twist. It was also part of Tony Allcock’s delivery.