Riding as if on horseback is probably the biggest help, you should never ride with weight on your hands. Sounds like you've got it right.I have problems w/ both wrists & wear braces I got at the pharmacy w/ metal supports down the center. If it is a long straight I will rest my left elbow on the tank & relax my rt hand more. I grip my tank pretty hard w/ my knees all the time to remove any excessive strain on my wrists too.
But really folks try doing some grip exercises, it really made a huge difference for me. I also brought in a pair of 25 and a pair of 45lb dumbells I'll do set with here and there.