If you're good at hitting them and spinning them, then try that. I wasn't so good and ended up pushing it back towards the cam (on a 440) then had to drill and yank it. The drill shavings didn't seem to be a problem.

However a good application of some ultra black RTV should do the trick, or "right stuff". Heck even JB weld would work, and would still chip/crack away if you ever needed to get that plug out again.