I've gotta say, I don't have a bigger chill haze problem from doing hop stands to speak of. My hop stand beers out of the fermenter are usually pretty clear, and I pick up the bulk of the haze from dry hops. But, I don't stand for crazy long times compared to some I've heard - usually 20 mins for APA, 40ish for IPA. Maybe there's a threshold on stand time where things get hazier.