I'm at the age where arthritis is creeping into my hands and wrists. So, I find it a bit painful to adjust the throttle while riding after awhile, and the pain lingers long after the ride as well. I use a "cramp buster" but cramping is no longer the issue - the issue now is pain. So, I'm wondering whether there are any after-market gizmos available that others with this same issue use?

I know that cruise control is available, but I ride mostly back country roads that are twisty, so my speed constantly fluctuates which makes cruise control impractical.

So does anyone have anything to recommend for my situation?

Thanks!