Low-Impact Strength Training?

I have arthritis that is currenlty fairly uncontrolled, but in about a month my medications should kick into overdrive and allow me to pole. I can do a few self-taught spins on good days, but I would like to build some strength before I start up again. So here's my question: are there any strength training exercises that can help with poling that have minimal impact on the joints? I have access to a pool, which I know can help, but am wondering if there are any specific exercises that would benefit me. Also the kind of arthritis I have does not damage the joints, so poling shouldn't damage them further. Thought I'd mention that to avoid confusion. :) Any suggestions would be appreciated!