Joe,

I am not a Doctor, but, I have had Carpal Tunnel years ago when I had a job that required a lot of wrist movement. After leaving that job, my condition improved to the point that I do not have the problem anymore.

What you described here, " I spend more time shaking my hands or resting them than i do casting or tying flies", sure sounds like Carpal Tunnel to me and it can be very painful.