Always have someone in command (good leadership skills required). Have them direct the flow of things and give out orders. If you're playing with at least 4 to a team, the commander should assign rank, flankers (the fastest and most stealthly), and spotters. Each player should also be assigned a direction of favor. With a team of four, each player should study North, East, West, or South with more concern.
Practice very simple hand signals (hold up, let's go, cover this position [here], cover me, get down). Smell the air, listen for fluttering birds, and breathe slowly.
Oh. And watch out for spider webs, such a pain.