I gotta say I'm with Oskar on this one... for what that's worth... so my two-centers...

1) I don't play short. So I'd raise PF UTG w/ 77 and fold to a 3-bet. I think if you were going to play 77 UTG, you shoulda done the same. As played, you gotta fold 'cause you have no initiative and no set odds.
2) As played pre-flop, you gotta at least $1.40 the flop and shove the turn.

All this being said (...to Oskar's point), I think folding sets to 3-to-a-flush or 4-to-an-inside-straight could be weak-tight at these levels. I'd prolly make a very crying call here. In actual fact, I usually do. This could be AA, AK or KT, QT that thinks my limp-@ss betting is full of sh!t.

Again -- I'm not convinced this isn't a leak. Last night is a perfect example. I lost 60-80bb pots on flopped sets 4 times... 3 of those were where the 3rd flush hit or the straight draw completed on the river. I'm facing a 1/2psb on the River, and just can't see folding... The other loss was to AA spiking an A on the river so nobody gives a sh!t on that one...

Is there a consensus to seriously consider folding to this crap whenever it shows up? I'm consistently getting away from TPTK hands when aggression shows up in this situations (even two-pair), altho' I'm not convinced that line doesn't have me getting bluffed outta sizable pots. But sets...?