I'll try first.

1. Fold pre-flop. I really hate these hands even with position. You are not even drawing to the nut flush.

2. You have hit the flop and you have position, I' d raise 3/4 pot. You are only really worried about 57 at this point., which at this point looks highly unlikely. In fact on this board it looks like no-one has much of anything, so why not take it down here?

3. You hit the turn, nobody is showing any aggression. I'd raise again. Why let hands with 1 pair and a better draw/ 3 of a kind see cheap cards?

I'm not sure if this is correct since I never play these hands even on the button with 2 limpers. To play this from the button you need to use position especially when no-one has shown much interest. Too much like hard work I think.