My idea of the thin, vertical LED stop/turn/tail lights fastened to the hard top is just that right now, not cemented in stone, or plastic YET! But, as stated, when the bikes are on the back, any lights that are NOT HIGH are almost completely blocked to following drivers. When the Jeep's being towed, the bikes are on the back, every time. So, I'd rather develop something like my idea than go unsafe.
What each person does for lighting, is of course up to them. I'll definitely post pics (although it's a pain in the a... on RV.net as opposed to other forums).
Scott