WHAT IS THE CORRECT BET

Really depends on what kind of read you have on him, is he a calling station? LAG? TAG?
IMO, I would bet 3/4 the pot on up to the pot.
Giving him improper odds to call to his draw is you best course of action here

I would bet the pot, because with pocket 9s good chance he hits a turn / river and could easily be beating you, or at least scare you out of the hand :\

What kind of draw do you put him on? I'm not sure I understand. Preflop you raise and he calls and you put him on a draw. What does that mean? Could he have a small PP or ONLY 2 non-paired cards. After the flop what possible draw could he be on except 2 over cards? Is that what you mean?

Anyway, yes it would be correct to bet. You certainly don't want say KJ to see a free card.

What concerns me here is your assumptions. Putting someone on a hand is very tough and often wrong. It's better to put someone on a range of hands factoring his past play and current actions. Could he have 44 here? I think 44 or 22 fits his preflop action and he then decides to slow play his set. Not saying that's the case just that when you put somebody on a hand and refuse to consider anything else you can get into big trouble.

By the way 3X BB with one limper is prob too small. Lets say the blinds are 5/10. Villan limps and you raise to 30. Now there is 55 in the pot and it costs villan 20 to call. Certainly good enough odds to call with almost any holding that would limp in to begin with. With a limper I would bet more like 5 or 6X BB with 99.

Post flop dont think in terms of XBB in your bets. Think of percentage of the pot and what kind of odds you are giving the opponent. The goal is for him to make a mistake if he calls. 2/3 of the pot or so would normally be about right. However there is another factor. The actual dollar amounts and percentage of stack. Lets say its eary in an MTT any you both have 1500 chips. There's 75 in the pot and you bet 50. Well then that 50 looks real small to villan (and therefore weak) and is also only a small percentage of his stack so he might call with any number of unmade hands even if not getting proper odds so sometimes you need to overbet the pot. Now if you each have 250 chips that same 50 bet is a lot larger percentage of his stack and therefore a bigger bet even though the same.

I'm not sure what you mean when you say you're putting him on a draw, because I look at that board and I don't really see any draws.

Anyway, I'll tell you in general what you should do against draws in terms of bet sizing. Lets say you have AJo, and flop is AsJh6h. You figure you have the best hand and you're wondering if he maybe has 2 hearts, so you want to bet an amount that makes drawing for him unprofitable. Lets say pot for now is $12. If he has 2 hearts, and 2 are on the board, that means there are another 9 hearts in the deck. The odds of him getting a heart on the turn are about 4.2 to 1 (its very easy online to find tables that give you odds for drawing hands, for example straights or flushes, in case you don't know how to figure them out, if you need to find one let me know I'll help you out). Since his odds are 4.2 to 1 for a flush, you need to make sure you bet enough to give him incorrect odds. Pot, we said, is currently $12. A bet between 1/2 and 3/4 pot is enough to make drawing unprofitable. A $9 bet, for example, will make the pot $21, so he has to put $9 in a $21 pot, which means he's getting a little more than 2 to 1 (2.3 to 1).

You should, though, get familiar with the concept of implied odds. I suggest you give a good look to the articles section of the forum, you will find many interesting articles about odds and implied odds. Give a look at it and if you need more help just post in the strategy section and we'll help you out.

How deep are the stacks? Cash game? Tourney? If so, level/blinds. Table image of hero/villain? And what draws are you worried about on that baby rainbow flop??

Pot bet should do it.

Wow that was a quick read. and what draw do you put him on preflop? is he known to play alot of drawing hands? Villain could also have a PP maybe even bigger than yours or hit a set and that would be like you're on a draw? like the others said need more info on villain for members to give you some solid feedback, but to your question I'd also make a 3/4 to pot size bet and take it from there, if villain slowplayed an over pair or hit a set he ain't going anywhere.

What does LAG and TAG stand for?

LAG= loose aggressive
TAG= tight aggressive
DAG= donk&go this one the easiest to be just donk a few stacks and go sleep

God, if I try to DAG, the only reason I go to sleep is because luck never comes my way

I would bet a pot size bet because the only way he would call a pot size bet is if he had an eight, straight draw, or a set.

Again, what draws are people seeing here?

Its not so important really what we see, the OP was wondering about his decision based on what he saw.

But about the only draw out there that might have even got villain to enter the pot is an A3, lots of folks limp weak aces. But then tnt posted the question, and hasn't been back to check for answers.

Thanks guys for the advice. The reason I didn't specify what kind of draw I was putting villian on was I wanted as much input as I could get. So again I thank you guys.