Todd,
Just wanted to add my voice to the chorus of those who have thanked you for your information. I just started your floating thumb technique about an hour ago, and now I'm permanently switched. Thankfully, for me, it was a very fairly intuitive switch, so while I'm not 100% yet, I'm in the high 90's....
Awhile back I had mentioned to the guys I was playing with (who also taught, albeit not at your level) that my right wrist was killing me, and that I didn't understand what was going on. They both told me to drop my wrist closer to the guitar, but as I was playing anchored on the pickup, it kind of didn't work so well. After trying your floating thumb, I wasn't sure at first. Once I started being able to play piece that I knew with it, I was hooked. A short time later, I sit here and type this, one happy thumper.
Thanks for the devotion of your time to help others develop....that is a skill in and of itself.
Peace
DB9