Where on the ball should I place tape to view the reaction of the ball? I've seen a ball someplace that had a 1/2" strip of tape on it but don't remember where on the ball it was. I have a hard time seeing what my ball is doing. Thanks.
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Moon
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So many questions, so little time but I''m having fun.

You can do it a couple of ways. Like kid said, on the PAP or vertical between the thumb and bridge of the finger holes. Either way, you should be able to see how the ball holds the initial axis rotation.
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whoever said size doesn't matter never had trouble with a thumbhole

An interesting tape job -

http://ourworld.compuserve.com/homepages/kennmelvin/VFlare.Htm