Imo too many tracks now just dump water on within a couple of hrs leading up to meeting hence, no time to soak in, annoys riders and really does nothing to hold the track together, as has been said drown it the night before or 5/6 am if possible, but another way you don't see in UK now is a light spray of water whilst grading every few heats to keep it together and dust down, Poole used to have a crop sprayer when speedy was there, perfect, lakeside do it (do wish 2 drivers though) and dust has not been a problem, riders only dislike it when its dumped on the track.