Dopple said:
It looks to me like splitting fours is not advised at any count. Seems like you would have alot of chances to das. I would think it would be a good move on a high count against a 5 or 6.
I usually do it in slightly negative counts, which maximizes the odds of getting at least one good DAS (you want those 5's & 6's, or, better yet, a 7) - w/out negating the whole point of a DAS, which is to get a high third card (8, 9, or 10). You also don't totally negate the likelihood of the dealer's busting, which on a 15 or 16 he's apt to do in all but a substantially negative count (and if he has a small card in the hole, he's unlikely to outdraw you). But, split 4's in too high a count and you're apt to get stuck w/ two 14s, and thus forced to depend entirely on the dealer's busting. Nobody wants to do THAT, if he can avoid it. ;-)
Anyway, that's how *I* normally play it, and so far it's been workin' pretty well.
wvbjplayer