Fixing rust hole ideas

[DEF4Runner]

Nearly every school of thought out there discourages the use of fiberglass/bondo to fix these kinds of holes, but would it really be THAT bad with something this small and in THIS location (Southwest of the rear license plate)? I thought about shooting it with some rust inhibitor and using one of those Bondo self-adhesive patches in the back, then filling it in with bondo up front.

I'm also open to other ideas...

Thanks.

 

[Ralph Blake]

It might not be simple but i feel the only real way to do it correct, is to cut the rusted area out and splice in a new section using micro welding of thin gauge metal, then blend the weld area to the original metal then prime and repaint it.