It was fairly obvious what he had by the turn. Anybody fold here? I feel like there are two main options here. Get it in on the flop when you are a slight favorite. or, for less variance, call the flop raise and turn bet and save some loot if you miss. The first one is more my style, I just didn't know the numbers at the time.

Full Tilt Poker $0.25/$0.50 No Limit Omaha Hi/Lo - 9 players
The Official 2+2 Hand Converter Powered By DeucesCracked.com

UTG+1: $36.75
UTG+2: $50.00
MP1: $77.15
MP2: $54.85
CO: $14.95
BTN: $22.50
Hero (SB): $50.00
BB: $49.50
UTG: $96.00

UTG+2 posts a big blind ($0.50)

Pre Flop: ($1.25) Hero is SB with A 9 2 9
UTG calls $0.50, 1 fold, UTG+2 checks, MP1 calls $0.50, MP2 calls $0.50, 2 folds, Hero calls $0.25, BB checks

Flop: ($3.00) 3 4 9 (6 players)
Hero bets $3, BB folds, UTG raises to $12, UTG+2 folds, MP1 folds, MP2 folds, Hero calls $9

Turn: ($27.00) J (2 players)
Hero checks, UTG bets $27

I would have gone with it on the flop. Quick math says you are 35% here on the turn worst case AdXd2x and about 45% in most spots so you obviously cant fold. I doubt he folds to 11 more on the river so at this point it is probably just a call and you can save yourself $11 bucks if you blank.

My thoughts pretty much.

I'd either shove on the flop, or C-C the flop for pot control and cheap cards... Since this is NL, you can always stick it ALL in once you hit, so I guess just depends on your "mood" att.

d'

get it in on the flop

Yeah I think the times you have him beat for low (imo way more often than not) makes you a long term favourite - as u know, when u have the nut low draw with a good high hand draw you basically always want to get it in vs someone with just the nuts for high. this is just like nut low draw and nut flush draw vs flopped 9/10 high straight no/worse low. pretty much same equity i reckon.