We use the Comer bridge boat ramp next to BB Comer Bridge in Scottsboro, maybe the same one Derek is talking about. But it is more mid lake than upper end. It is about 10 miles down the lake from Mud Creek.
If your talking about the one by the 17 (I think) bridge it is a nice ramp. River current can be an irritant up that way though depending on how hard they are pulling water since you launch right into the channel but wasn't a big deal