Re: hot tub
I have a nice big bathtub with jets in it. It really does help, and I should use it more often than I do.
It's number two on my list of weapons against pain:
#1 Stretching and moving
#2 Hot bath
However, before you pay to have it installed, perhaps you could try one out someplace else. If you can't find one at a nearby gym, check into a hotel with a hot tub for one night.