I can't back at all with a camera, and a "cheapo" to boot. I carry some long yellow ski ropes, drape them on the ground along the line I want my inside tires to follow, then just keep the tires on the rope all the way to my parking position. Can easily back my 30' a hundred yards down a narrow alley, swing it 45 degrees and put it between two 10 foot wide posts of my shed. Even easier in a camp site.
2016 Keystone Bullet 251RBSWE
2015 GMC Sierra 1500 4x4 6.2L 8 speed Max Tow Pkg