Need some advice from the folks here. I went out and purchased a level that screws to the front of the trailer. The thing is huge (11 x 3) but is easy to see and should help me level with out getting ...
As others have said, drill a pilot hole first. I did caulk around the level and also used butyl tape to seal behind it. Your camper has a bajillion holes in it already. A couple more really is not a big deal.