Thank's for the tips, I have a 24 foot C and until last year had a comercial license, I have no problem backing big trailers, even when I could not see the entrance and have inches on both sides, I have a couple of back up lamps that are aimed up and a bit out to shine light on the trees, this has helped to avoid the branch that I saw when looking over the site.
One other reminder for the spoter, have that person stand and move in such a way that they can be seen on the mirrors, and if using hand signals, have a definite set of movements, intead of flopping arms and hands that look like wings in a panic attack, same as guiding aircrafts on a carrier deck, definite and presice in the signal and being visul in the drivers mirror, if they have a backup cmera they do not need this advice.
One other comment, do not over steer that is the surest way to mess up, a small movement at the sterring tire translates into a big movement at the trailer tires.
navegator