Anyone using front and rear dash cams? I want a set that turns on with the bike so I can forget about it and just hit the loop option if there's footage I want to save. I the cheapest GoPro I could find and that works best kind for planned shots but it don't loop, can't see behind, and if I leave it on all day there's too much useless footage to review. I need something I can hit a loop button on to save front and rear footage in case something unplanned happens. Any suggestions?