Hi Seaglass1972 and welcome to NeuroTalk, but I am sorry you had to come and join us here.
I know all too well the problems that you are facing with your CRPS. Luckily, I did not have to deal with worker comp on top of it all. I am sure that adds to the frustration that having to deal with CRPS can bring.
A lot of us over on the RSD/CRPS section do use aqua therapy which has helped many of us. I have not yet had the chance to give it a try, so I can not say I know the 50lb feeling that you are talking about, but I am sure some of the other members would be happy to share their experiences.
There is a RSD/CRPS section of NeuroTalk where we would love to have you join us and share your experiences. Here is the link to that subforum:
http://neurotalk.psychcentral.com/forum21.html
I hope to see you over there sometime soon.