Do you mean this grip: http://www.matsbackstrom.com/index_pages/ThumbRest.html ?
The detail procedures how to make it are discribed somewhere on that site...
Great Site!! I have not found the grip making instructions, but he has some excellent information regarding many topics. Thanks
BTW...the Jalas Cross Control shoes look really good to me. Anyone know where to get them in the US?
Well, here's the direct link: http://www.matsbackstrom.com/index_pages/Grip.html