I have the Cipa clip on mirrors and after adjusting them, I marked which was set up for drivers side, which for passenger side. I like them, I can see down the side of the trailer and verify no one is there, or no one is moving towards my blind spot.
2006 Nissan Xterra
B&M Trans Cooler
2011 Nomad 206
Panasonic/Pioneer/Kicker ~ Audio/Video System
Days Camped /2009 / 33