Tried the new full(back)leather heel last night, our approaches are wood and sliding in the middle of the approach has never been a problem. The sides however have always been kinda tacky, and shooting a ten pin for me was always a challenge to know if it was a slide or a stick shot...I practiced about 15 ten pin shots on 4 different lanes and ever shot was a pure slide. This for me is a great invention....thanks D/T,....I may never take this one off. jimensminger