Or anyone else that wants to answer

I'm going to carve a couple of hours out of my weekend to do some more bowl turning. Bill, I am going to make your plywood jig for turning the bowl around to finish off the foot. My really basic question is this:
How do you apply finish when using this jig? My thinking is that the finish might get a bit scratched up from the plywood, or does the rubber protect it enough that it doesn't? What I'm thinking is put 1 or 2 coats of oil on while turning, let it dry, then use the jig and take the bowl off & lightly sand it off the lathe & just wipe on another coat or 2 of finish. Does that sound about right?

Also what finish do you use on bowls & is it food safe - this is just a throw out there question.

Thanks