well start out with the hard part.. technec (sp?) cant spell today.. your form and body english plays a big part in it, what alot of quad riders dont realise is that if they get off the side of the machine like 3 wheeler racers do you will be even faster and more stable...
check out these vids to get a idea od body english and form.
studded tires are a must unless your running tires made for non studded class.. for studs.. kold kutters.. you want enough to hook, but enough to support each other, just think of people laying on a bed of nails. im running 500 ice screws between 3 wheels, and 100 or so sheet metal screws on outter lugs just for throwin snow and ice roosts.
suspension.. LOW!! you want it low, lowered machine wil lbe faster due to being more stable, and wider, wheel spacers or axle in the rear, and wheel flip in the front of spacers, unless you have wider a arms all ready, if you cant get get your machine low you need to get your body low!! ... did i mention LOW???
serious guys run shorter swing arms to make the turning radius tighter BUT a blaster dont need it since there short to begin with, ..
a cheap temporary option for lowering would be to get some strong ratchet straps hook them on the shock mounts and have someone sit on the blaster or 2 peaople and lock the ratchet straps to it keeps the suspension low, dont keep it like this all the time but for ice race days its fine, rear you can go from the carrier to the frame, or the shock mounts also