NATO, I am in your exact situation. I hunt deep on public land. The key is TAKE YOUR TIME. I leave the truck way before I need to be on the stand. I dress to the point that I'm about to freeze when I leave the truck and pack all my clothes. If I take my time, I can get to the stand without sweating.
When I was a kid, my dad always preached at me to take my time. Of course, I never listened so more than once I came out of the woods sick. Amazing how smart Dad's are if we would just listen to them...