Enclosed trailer purchase!
^^^ I use a simple thing in my trailer as my 71 Demon 340 sits low and would not allow the driver door to open without hitting that trailer inner fender. I simply screwed down about a 3' length of 2x12 where each front tire goes. Just drive onto the board and done. This provides (barely) clearance to be able to open the door and clear the fender. Since my trailer has to haul multiple cars, the length of the board allows each car to be set where it needs to be and provides clearance as needed. The avatar Demon doesn't need it but the 71 sure does!! And it was already installed when I put the Charger in it so clearance was not even checked. It just worked.