Thumb slugs are actually known by a number of names including: inserts, solids, and of course nudibranchs. No matter what you call them, they are all the same. Usually made of vinyl or urethane, they are a solid piece of material that goes into the thumb hole of your bowling ball.
Check the size of the holes first. As you place your fingers inside the ball, they should slide comfortably down to the first crease from the fingertips for a normal “fingertip” grip. If you pinch your fingers because they are too tight, change inserts or leave the holes slightly open.
Re: How to remove the thumb snail
What I do is take a small saw and cut the old snail into quarters. Then I just take a screwdriver and remove the sections. After the first section, the remaining 3 come out easily. The key to sawing is to keep an eye on the top and make sure you don’t saw into the ball.
So humans use thumb snails to regulate these inconsistencies. Once a hole is drilled without a thumbscrew it’s really difficult to sand the inner material down to feel perfect.
Virtually all professionals, however, use the fingertip grip. So if you have ambitions to bowl at a high level, a successful fingertip grab is something to aim for.
You want your thumbhole to feel loose, but it needs to be tight enough so you can let go of the ball without grabbing it. You shouldn’t need more than a piece of tape to do this.
This is a hybrid of the two grips above. As you would expect, this grip requires full insertion of the thumb and the middle and ring fingers midway between the first and second knuckles. It offers more hook power than fingertip grip and more control than fingertip grip.
You can also email us at [email protected] and we will respond to you in a timely manner. Our Pro Shop location in Town & Country Lanes in Bethlehem PA is open Tuesday through Thursday from 5:00 p.m. to 8:00 p.m. and Saturday from 12:00 p.m. to 3:00 p.m.
“Tweening” A tweener (a term derived from “in-between”) is a bowler who plays the ball in a manner that falls somewhere between a sweep and a crank . They have speeds between 300 and 370 rpm.
Not to be confused with the pins at the end of the lane, each bowling ball is marked with a colored dot representing the ball’s pin. The pin is critical in determining how to drill your ball to get the reaction you want on the lanes.