Playing 5 handed UTG min raises to $2 and I flat A344 ds in the CO. $80 / bb effective. Family pot $10.
Flop is 398 with two spades and one club. checks around.
Turn is 5 h. SB leads for 2/3rds pot. Folds to me, button is still to act. So here I am getting 2.5:1 and have 7 nut outs, the non board pairing spades. I also have a bunch of potential hidden outs, such as three of a kind, aces up or a bike. It is also possible that the button raises after I call, which would mean that I forfeit my call. Looking at the nut outs only first, I have 7 outs and know 8 cards. So there are 44 remaining. That means my ratio of nut to non nut outs is 7:37 or 5.3:1 against hitting the nuts on the river. I decide that I do not have the proper odds to call and fold.
How frequently can we expect button to be raising the turn in this spot? Both SB and Button are regulars. What are the minimum odds we need to be receiving in this situation to make the call? Should I have bet the flop? Why or why not?