Thanks. Just now saw the comment. Did not realize it was there.
I've pretty much got my arch down now when backing in off the street. I have spray painted around the wood blocks I put down on the carport side to get level so I can get them in the right place everytime. Once I place them, I have a target for the wheels. I always back in from the driver side so I have direct line of site on the trailer top and wheels most of the way.