I'm typing in 'bumpers' but it's not bringing up rear triangular things? My ladder is hollow tubing and protrudes the corner bumper things with an M laser cut in them, so they'll need to go and I'll need a bumper that protrudes further than the ladder, as my reversing has already bumped into things like trees and **** like that. Does anyone know what they're called, and will I need to take my towbar off? Cheers in advance if you can answer.