Steel diamond plate. I haven't even attempted to put it on the truck yet, as I still remember the heck of a time I had trying to get it lined up on the trailer. Centering it left to right wasn't so much of an issue as it was getting it on straight. Such as the front of the camper pointing towards 1 or 2 o'clock, instead of straight on at 12 o'clock.
I think part of it was just not having a clear view of the very back of the trailer, but I think a bigger part is not having a clear reference of the sides of the trailer compared to the sides of the camper like you'd have with the wheel wells of a pick up bed, and if it got off, it would only be a degree or two that would be easily straightened out once it came into contact with the front of the bed. I never had much of an issue getting my campers into pickup beds, but then they were also stripped down models going into 1/2 ton trucks. Or in other words, light enough that I could dang near pick up the end myself and slide it over, lol. Not something that I want to attempt with a 12 foot Amerigo.
