No patch panels available for the rear of the rear fenders. I made my own like Carl suggested. It's not impossible, as it was the first time I tried something like that.
Here's a link to the process.
Patch Panel FormingMine was actually the right rear fender that I patched, so just follow along using your left hand instead of right hand.
Here's a pic of that fender with the first coat of epoxy primer.
