Thats a great idea with the tarp. I have a silver/black one of about the same size and carry a bit of light rope to be able to string it between 2 trees. Takes up next to no room when its folded up and I put it on the rear part of the seat so it protects that aswell. Good thing about the silver /black one is that if I wish to have a bit of a sleep in, in the morning it cuts out most of the sun. Also you don't get the dew on ya tent which can be a pain when you need to pack up in the morn.