[graarrg]

It might be obvious.. but the nut low, despite its seemingly many quarterings, is worth potting in large pots in many situations without accompanying high. When scare cards hit the board, you can knock out straights, two pair, sets, and the like that will scoop you the pot (even BAD players don't call their whole stack when a scare card hits).

I'm a PL noob though. Feel free to shoot holes in my "discovery."

edit: I think Ray Zee's book has stuff on raising in limit to knock out better highs, but in this case, it can be done from any position, any time, if your read is right. and it can be done with no high to speak of.