[NLMan]

If he's a super aggro donk that NEVER folds, I would c/fold turn and wait for a better opportunity to play for stacks. As absurd as it sounds, many donks get monster stacks because some otherwise good players start doing stupid stuff like trying to bluff them or play for stacks with underpairs.

As weak as losing $140 with something that's most likely the best hand sounds, it'll most likely make him even more eager to bluff you next time when you'll actually have something like TPGK or an overpair.

I've learned my K7o lesson many many times in the past and I am not going to repeat my mistakes.

Oh ya, about b/f... Very read dependant (which is easy to get since he plays just about every hand). Some donks DO fold c-bets and some do fold later on and some learn to fold after watching you play. It is extremely important to watch every one of their hands since they are the ones you'll be playing.