The panels really look good on this boat (comments from other people!) and best of all, when I get back to weekend use, it won't take me an hour to remove them and the cross tubes to be put away in storage.  They can be swiveled to aim directly into the sun but, I haven't needed to do this since the panels are larger than necessary to keep up with the refrigerator, lights, stereo, VHF, anchor windlass, etc.