I did use marine epoxy. And yeah, next time I do it I'll make sure to lay it on thin.
Okay, I might do the chisel thing on some of the bigger ones but a lot of the gouges are tiny so I'll just leave it and it shouldn't make too much a difference except for speed, eh? The base is pretty dead already, it's scratched to death so speed is already out of the question anyway.
While we're talking, how deep does a gouge usually have to be before you'll take the effort to ptex it?