I went to Lake Powell last week and it was awesome. I launched out of the Bullfrog end of the lake and fished both up and down the lake. For me it was better up the lake towards Good Hope area. caught fish on everything, but spinnerbaits and topwater were best.
I used a 1/2 oz Pepper Jigs spinnerbait in shad pattern and of course my trusty Megabass POPMAX.
be carefull tho... driving from Blannding to the lake is closed and there is a major detour. I suggest going around through Moab.