I only use a polyester spare for 6 and 10 pins, and some few multi-pin leaves like a 3-6-10. Additionally, I try some splits with a polyester shot. For this shot, I use a very different release from my strike shot, breaking the wrist totally back and turning the wrist outward in a clockwise direction (righty), still giving some lift upon release (I simply do not manage to drop it). The result is a pretty straight shot with a full roller track and minimum side roll. On a dry back end the ball might curve 2-3 boards but it is predictable.
On multi-pin leaves (esp. any double wood) and single 4 or 7 pins, I use my strike ball because this ball will roll and has less deflection risk upon impact. Especially with the 7 I had been struggling with a polyester ball and a straight shot, and I found that simple foot adjustment and a relaxed strike ball release is much more consistent for me.
Anyway, I'd recommeend expertiments in training and some dedicated games to try out and evaluate different spare techniques. Practice and routine is very important, especially if you have or want to develop a special release for this instance.
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DizzyFugu - Reporting from Germany
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Check out BR.com's vault of wisdom: the unofficial FAQ sectionEdited on 8/8/2007 4:11 AM