Quickly flicked through all 36 pages and looked at the pics of how people mounted them in the back, I noticed no one has used a suction mount for the rear, is it a bad idea to do so as I ordered one as currently I just use double sided tape and stuck it to the ceiling of the car but it keeps falling off, I've also got an adhesive mount for it, would that be a better bet or should I try an altogether different method?