I generally play pretty tight on the flop and if I'm not getting the "right" pot odds on the flop I'll fold before the turn. For bets on the flop I was only taking into account the next card not planning on seeing the river card. For example if I had an open ended straight draw (8 outs) I'd require odds of 5-1 in order to call. Should I be using pot odds similar to those as to what you would require on the turn or should I use odds of 3-1 with the thought of you have two more cards to see.

Any thoughts would be greatly appreciated.