PF- i fold sometimes but limp behind other limpers sometimes too. that's just part of how i roll.
flop raise- i agree its an option but i felt that SB leading into a field of 4 opponents showed some strength.
turn- i agree that there's no chance anyone has a set. i should probably have raised this turn and repped the set. i actually agree w/ your thinking here pretty strongly. BUT my main concern at the time was that i'd have to follow through on the river because flush draws may call a turn raise.
also- if BB has a flush draw, he's drawing to the hearts 'cause there's almost no way he sees a turn with a backdoor
![Diamonds [d]](https://www.pofex.com/images/smilies/diamonds.gif)
draw. i also tend to think he don't have a flush once he checks the river.