Hey Ship,
The only reason I mentioned customs was because I thought I remember a customer who had a very old pair of Linds 20+ yrs and they had the nub technology (like Linds Exxtras) and the gum rubber on the other shoe. It was an option for customers even back then when ordering customs.
I also used to use cigarette ashes when I couldn't slide but so many houses now that have outlawed smoking, it would not be an option for the bowler. I currently tell bowlers to slide their feet under the ball return area because that's where dust/dirt will build up and it would also help us slide some. It's carpet that cleans the bottoms of our shoe and a shoe that is too clean is what actually sticks. The Reno National Bowling stadium opened with a small patch of carpeting right before walking on the lane but after so many incidents of bowlers sticking and falling over the foul line, they removed it.
I guess the biggest difference for some of us older bowlers who went from standard leather bottom type shoes is that we also learned to "shuffle" our feet in our approach vs the more modern game of taking "walking" steps.
If memory serves me correctly, Neil Burton wore a gym/tennis shoe on the PBA show in the 70's and I think that's when it hit manufacturer's that creating more friction for that style of bowler was very useful.
--------------------
Rick Leong - Ten Pins Pro Shop
Track Intl. - Amateur/Pro Shop Staff
Vise Inserts Staff
www.Trackbowling.comSee profile for Track Ball videos
*El Presidente of the Track Legion