In LO8, too many people continue after the flop by drawing to non nut hands. They also don't play their hands correctly, meaning they play fast when they should slow down and vice versa. You should generally play for the scoop but in games where there are 5 or more people in every hand you are missing out on potential profit if you only play to scoop.
It is ok to play for only half the pot under the right circumstances. If you have a nut flush draw in a multihanded pot and there is no pair on board then it is ok to go to the river. In this case you want to check/call rather than bet, if there is a lot of action before you and you have to call multiple big bets then you should let your hand go. When going for just high, it should be to the nuts so only stick around with nut flush draws, nut straight draws(OESD or a big Wrap) and top set on unco-ordinated rainbow boards.
If you flop a nut low it is wrong to fold it unless there is a lot of action from tight players. If you only have a nut low draw with no high prospects you need to use your judgement. Ideally you want to have low protection A23 or A24 instead of just A2. You want the pot to be multihanded so that if you end up getting 1/4rd you wont lose money. You also want to be against weak players, the type who play middle straight cards and draw to non nut lows.
In Mike Cappelletti's How To Win At Omaha High/Low Poker he talks about Pushing and Pulling. Pushing is when you push people out of the pot and Pulling is when you pull people into the pot. You want to push people out when you have a nut hand in one direction and a marginal one in the other. You want to pull people into the pot when you have a two way nut hand. This has helped my game quite a bit, particularly when playing higher limits or against decent players.
An example of when to push is when you have the nut flush on the turn with an A4 low on a board that has 3 low cards higher than 4. In this situation you want to bet/raise because you'll probably be able to make anyone with an A3 or 32 fold their hand. An A2 wont fold but if a 2 were to come on the river you would end up scooping. Cappelletti calls this a Promo Raise as it promotes your marginal holdings chances of winning. You can do the same when you have the low locked in and have a J high flush. Betting and raising here could force out anyone with a Q or K high flush allowing you to scoop if no-one has the nut flush.
An example of when to pull is when you have a protected nut low and the nut flush on the turn. In this situation you want to build the pot in a way that doesn't push people out. Betting/raising from an EP is not a good play as you force people to call two big bets. If you're 1st to act its better to check*, especially if the players on your left are aggressive and likely to bet. This allows you to check raise and anyone in MP/LP who called the 1st bet will often be trapped and call the 2nd. If you're in a LP and there has been a bet and calls to you, go ahead and raise. If the action before you goes bet, call, call, raise and you're to act in last position, don't reraise as you'll be forcing people to call two big bets. By just calling the raise you make it easier for other people to stay in the hand. Pulling in LO8 is all about reducing you're investment in the pot and at the same time increasing the investment by everyone else which increases you're profits.
*In the micro limits(2c/4c, 5c/10c and sometimes 10c/20c) where the play is very weak/passive checking in EP could see the the action be checked around. You dont want this to happen so betting 1st in this type of game isn't a bad play.