parking under tree.. how durable are rubber roofs?

Leaves, twigs, even small branches falling from the tree will not harm the roof. Larger stuff can possibly poke holes in it. But overall the roof is fairly strong. I have accidently raked the top of mine under some low limbs before and did nothing but leave some lines where the limbs brushed across. Not something to do, but does show it is fairly strong.
I did poke a small 1" hole in mine trying to remove a limb over mine at a campground. But a small piece of eternabond easily took care of that.