$1-$2 private game, very soft. Villain is well-known to hero: Guy in his 60s who gambles it up and plays splashy when he's winning. He rarely leaves a winner. Has recently run his stack up to $600. Stacks are $500 effective.
Hero has 6
6
in the big blind. One limper from MP. V overlimps from LJ. CO raises to $12, BTN calls, H calls, V calls.
Flop ($47) is 5
6
7
H checks, V donks $45, folds to H.
Given the pot-sized donk bet and stack sizes, I decided to put V on a range of hands he wanted to protect, as opposed to some sort of big draw where he'd rather check to the raiser. So I'm thinking: A7, K7s, 88-TT, 75, 55, 34. Flopped nut straight like 89 is also possible, protecting versus the flush draw, but I think this guy tries to get trappy with the 89. He also tries to trap with a hand like 77, so I'm taking that out of his range as well.
So in deciding that he had a hand that he wanted to protect, and given that I'm ahead of most of his range here, I elected to min raise to build up the pot and keep him in the hand. So I make it $90. Villain thinks for about 5 seconds, then calls.
Turn ($137) is a blank: 2
I lead for $100. Now V raises to $300. Pot is $537 and it's $200 to call. If I call, I'm committed and putting the last of my chips ($110ish) on the river. The 1 pair hands are probably no longer in his range.
What's the best play here?