It was stated in the first part that in PLO all cards run close to one another in the value category. So it's not good to leave out a big part of your stack in the pot if you don't have the ultimate hole card like the AAxx or KK/QQ. Things change drastically once the flop is opened.
It will be recommended that you raise if you have a strong hand but it's not advisable that you will place more than 10% of your stack during pre-flop unless you have a very strong hand like AAxx or KK/QQ.
With these kinds of hands you might want to bet less than 10% or more than 50%.
Committing Less Than 10%
If you bet less than 10% of your stack in the pot then you're giving yourself an option to back out in the hand if the flop is not good to you. One pertinent example would be playing in a PLO game with $100 buy-in where in you possess a good hand comprising of the following cards – AsKsJdQc.
When the flop opens and you see an AJQ with no cards the same suit as you then you can let go of the bet with no qualms if you only bet less than 10%. It would be better losing a fairly small amount than to be caught up in a raising war.
But if the pot opens to $7 with two callers on the line and you re-raise your bet to $38; you would almost have to call with your 3 pair and a gut-shot straight to win the pot. Think of it, once you won you may get a 300% profit from your initial bet.
Just remember that betting 20%-40% of your chips before the flop is turned is poker suicide.
Committing More Than 50%
Betting more than 50% of your pot is ridiculous unless you have a certain AAxx or KK/QQ hand. If you started this way, the result would be a heads-up against one of your opponents because almost all players may fold their hands.
If you started to raise this kind of bet then it would be given that you need to bet till your opponent folds or when the hand ends. Don't worry about getting nothing from the board because you already have a high hand.