Thanks for those tips about putting the PVC on top but I forgot about my battery and there are 9 PVC pipes 1 3/4" dia. Several weeks ago I thought about making a small door in the back so I could put the battery in from the rear of the camper.
I forgot about that.

Old age.
Inside the rear of the camper I am going to build a storage box about 12" high and 18" deep. It would be the width of the camper. The top of this box will have a lid I can raise to store things in it. I planned on using one side of this storage box to put my battery and electrical connections in. I thought an access door from the outside would make it easier for me to put this battery in the camper.
So now I'm thinking one door the width of the camper about 16" high. This would give me access to the back side of this storage box to put the battery in and the PVC pipe. Or I could put in two doors.
I can only imagine what you all were thinking when you put in your hatches.