So we just moved in to a new house and I'm trying to figure out where the home for the pup will be. We have a 2005 Fleetwood Niagara HW that is 19' long and 7' wide (with the awning bag attached. The TV is a 2002 dakota quad cab at about 18'. So all in all the length of the rig is 27'. We currently have a large area to the side of our house off of our driveway that is unused space would be perfect for storage. The issue is that I know how far out I need to make the opening for the drive in to the storage area. You can see in the attached file that the deck (which has posts on the corners) juts out about 20 feet from the back of the house over the driveway. So we can't start the opening until there. Also, about twelve feet out from the end of the deck, the side yard takes a sharp drop, and I want to put in a retaining wall to level off the whole side yard area. Can anyone help with the numbers or a system to figure out the angles for the back in opening?