After I posted last night, I found a video of that "throwing star" dent puller. Pretty slick. Easier than a stud welder and separate slide hammer like I borrowed and used on a few spots.
I actually have something that should work on heat shrinking. I attempted to build a one-sided spot welder from an old microwave that died. It didn't work for that, but should do the trick for spot heating. Has a nice big copper electrode that I can shape to somewhat of a point. Will give that a try.
