Slick rock gets boring after the umteenth time you ride it. It's fun to ride when you visit, but there's a lot more to biking than slick rock. Anyways, have fun riding the same 3 slickrock trails all summer. Biking options in Moab are fun as hell, but very limited. Fruita is close and has great trails too, but the town sucks. If you want to ski all winter and bike all summer, any mountain town in Colorado (or Utah) would be much better and you're still only a few hours from Moab, Fruita, etc.