Quote Originally Posted by Random_Hero
say you have TPTK on the flop against an opponent and theres a flush draw out there. You need to bet 3/4 of the pot so that he isnt getting the odds to draw to his flush (If he is in fact holding a flush draw)

with 1 card to come a flush is 4/1 to hit but due to implied odds you can call with pot odds of 3/1 so betting 3/4 of the pot gives opponent less than 3/1 odds to draw and it would be a mistake for him to call.
Implied odds are not set. Against some opponents you couldnt call a 1/2pot bet with a flush draw and against others you could call a PSB. Against most opponents in position Im calling both.