I haven't been to Jocassee, but I ride Keowee quite a bit in summer(split time between it and murray). Keowee is BA, clean water, million dollar houses, in the foothills, always good depth bc Duke Energy will only let the lake level flex about 10' due to the Nuke Plant. You can normally find good water in keowee to ride, if not you can surf in just about anything. Personal opinion when hartwell was at normal level it was a fun lake to ride, plenty of places to ride, but since the water level is down so much I would avoid it at all costs. I put in last summer at one of the bigger marinas on the lake(off exit 19B), only 1 lane open at the marnina due to water level and my prop touched bottom while turning around. Partial bc some ppl's wives don't know how to back down the dock. Either way water level is awful. Unless you want to run the risk of running a ground and/or tracking red clay all in the boat I would avoid hartwell.
06 Moomba Mobius LSV