Re: 50 NL OESD on flop
 

no offense but this is one of the worst hands i've seen.
preflop is questionable, flop is bad, wtf@turn.
if you raise 57s from mp1 because the table is super tight or whatever, and get minraised calling pf oop might be ok. if you hit a very good flop like a combo flush/straight draw(which is what i'd play this hand for in this specific situaion) and you put villain on an overpair i'd bet/3bet him. as it is i'd check and call his ridiculous bet on the flop and bet turn and river if i hit. as played i put him all in on the turn.

Re: 50 NL OESD on flop
 

also raise more pre if you are going to play. 3x is ok from LP but EP with a poster and especially with a hand that is not very good you really don't want to invite people to come along.

Re: 50 NL OESD on flop
 

Raising pre is fine, especially with a poster. I'd rather raise this than AT off suit from the same position. Raising 3x is, however, not fine. Make it 4.5x. On the flop, you should probably flat-call. Implied odds are off the walls here. C/r turn or just shove.