Go waterless wash. I mean if you have salt still under the car you'll want to wash that off, but if just grit, no need for hose unless you got caked on mud.
I use Griot's SprayOn CarWash in my garage often before using QD. You can find others online. Buy a lot of plush MF towels and use both product and towels liberally and you won't induce swirls. GL. I wipe in one top to bottom vertical one way motion, never re-apply the dirty part of the towel, and never in circular motion when removing grit.