Just reread the PLO section in Hellmuth's book. When it comes to playing AAxx his advice is to try to get all money in before the flop even if the sidecards are crappy. This is mathematically correct, since you are a money favorite (unless you are up against another AAxx hand with better xx, that is).
What surprised me a lot is that he claims that if you don't get your whole stack in preflop, but only, say, 1/2 of it, you should most of the time push in the rest on the flop to protect your hand (unless others are already betting and raising and you missed completely). The reason is that you have to protect your hand.
Now I can see that this is probably a good play if the flop looks something like 26Jr and you are against one opponent who is very likely to have big cards. I might even do that against two opponents when I sense they don't have much.
Now in holdem when you have AA then you'd rather see a 288 flop than a 258 flop. How's that in omaha? What are the odds that this has hit 2 opponents? What kind of flops do you consider safe enough to shove in the other half of your stack against 1 opponent? Against 2? Assume that everyone has full stacks before the hand, and that your AAxx is not helped by the flop (for example, you don't have a nut flush draw).
What is your strategy against an opponent who has position on you and of whom you know that he will call a big raise with any wrap type hand, big cards or two medium high pair?
Most of the time when I put in one raise before the flop with AAxx and don't hit then I give up unless I'm against one ore two opponents who don't seem to have anything. Is this too passive? Is this highly dependent on reads or do the odds dictate that on certain boards I'm a moneyfavorite and that I have to push?
Thanks, Pieter