ah, taping a thumb hole. Its a science. But necessary for those that really need the correct feel in their thumb hole all the time. No matter the weather, the humidity, how much salt you ate or beer you drank, your thumb will change size. Watch the pros on TV
, sometimes you catch them messing around with tape, but they all do it, just the camera
doesn't always catch it. You can't bowl all day long and not have your thumb change.
All my equipment has the thumb insert drilled slightly large so I always have to use tape. That way the texture of the tape is a constant. How many pieces of tape varies as Dan mentions. I hate black tape, since it seems to break down and make a gluey mess, but white tape in the front of the thumb hole is something that can help you keep a consistent feel. If you get into the habit of using tape, make sure you keep on hand something that can clean tape residue out of your thumb hole. You'll be done for the day if you pull tape that got too warm and gluey, and you don't have anything to clean it up with.