About not parking with tires on ground. I have made parking boards for under the tires. Since I have a double axle camper I made the boards long enuff to hold both axles. The board is made with two 2 X 6 inch boards side by side to make it about 11 inches wide. I also used 2 X 4 boards under the bottom to hold the 2X 6 board together. The entering end was cut at a 45 degree angle. After the boards were in the "right place" I used big nails that are used to rain gutters to spike the board to the ground. This parking pad raised the camper three inches higher than normal and helps with the work underneath. All I have to do is aim the camper right each time I return. No problem.