Hello rwm0268! I agree with what you say...(or said, I am realizing that I am responding to a post from 2006!)
Anyway, I always took "floating thumb" to mean literally floating...no anchors.
I've used the floating thumb technique for more than 10 years now.
For me the reason was...years ago, I developed similar symptons to carpal tunnel. I noticed that when i used my thumb as an anchor, my wrist always bent with an acute angle!
So I rethought things and decided to stop anchoring my thumb. When I floated my thumb I noticed that it is almost impossible to bend your wrists when your are plucking the strings!
I think it is because, when you use your thumb as an achor, it is easy (by habit) to push your arm out forward more. This creates that acute angle with your wrist!
The way I approached floating my thumb was to just play as if I never had a thumb in the first place. I thought, what would that look like? An recreated that look on my hand.
It did make my touch lighter, I had a much less (and sometimes nonexistent) bend on my wrist! i can play now for hours with no more problems!
It's cool... I learned from reading this post that many other bass players approach their technique the same way and also call it the "floating technique!"
Anyway, I always took "floating thumb" to mean literally floating...no anchors.
I've used the floating thumb technique for more than 10 years now.
For me the reason was...years ago, I developed similar symptons to carpal tunnel. I noticed that when i used my thumb as an anchor, my wrist always bent with an acute angle!

So I rethought things and decided to stop anchoring my thumb. When I floated my thumb I noticed that it is almost impossible to bend your wrists when your are plucking the strings!
I think it is because, when you use your thumb as an achor, it is easy (by habit) to push your arm out forward more. This creates that acute angle with your wrist!

The way I approached floating my thumb was to just play as if I never had a thumb in the first place. I thought, what would that look like? An recreated that look on my hand.
It did make my touch lighter, I had a much less (and sometimes nonexistent) bend on my wrist! i can play now for hours with no more problems!
It's cool... I learned from reading this post that many other bass players approach their technique the same way and also call it the "floating technique!"

.