What position did villain raise from and what was your reasoning for the 3bet?
As played I'm def folding river, probably folding turn to a "tight regular." Need to know more about villain but unless you have seen him get outta line I'm finding a fold.
Preflop: You state villian is tight. Even though his range is wide being the first in the pot from late position, I still would not have three bet.
Flop: You hit your hand, I too would have bet. Villan calls your three bet preflop and calls your flop bet. If you think villan sees you as a tight, then he must have hit part of this flop.
Turn: I like the check. Small hand, small pot. Villian bets, Now you are getting into pot commitment issues with one pair. Not my favorite situation. If you call, you would have 350 left and the pot would be 740.
Getting it all in with one pair against a player you said was tight? Not me, I let it go.
Before you 3bet in the SB with KQo, you need to have a raising range for the villain pf. Tight doesn't mean much in this situation. Is he tight in that he doesn't play many hands, but when he does he raises? Is this the first time he's raised in 3 hours? Does he seem to understand position or is he playing a fixed range?
With no answers to these questions, all you can fall back on is could he raise in the CO, call a three bet, start betting on the turn and shove the river with K9 or worse. If yes, then call. If not, fold some time from the turn or later.
I agree not 3betting a tight player, yes he is in the CO but he also has position on us.
once he calls the cbet we are pretty much behind (his turn bet confirms it or he would have went check check), tight players don't flat a 3bet with K10 or less (some tight players won't even open raise with it).
fold pre (no it is not too nitty but why play fit or fold which is -EV)
Against a tight player, the 3! is a decent move to pick up easy money. Don't mind it at all.
flop - c bet is OK, but a check is better, now that we are heads up against a tight player, I ready to chuck this hand at any decent sign of strength from V.
turn - instamuck
river - instamuck.
the better play is check the flop and muck the flop if V bets. Tight players love to trap. V either has AA, JJ, or AK, all of which beat you.
