mine is use the other team and the field to your advantage. like where i paintball we built a tower in a tree and a dug in bunker wiht a roof(pillbox). since i was in charge of builing them and i like ambuushing people i built it relitivly close to some thick foilage. so i camp in their or around there and wait for them to go in them then ambush them.
or for using them to your advantage my friends always start at one base and they always cheat by going before the game starts. they always go the same way and always use pone of 10 obsticals(all are to the side of our base) so we have 2 people run away from our base and ambvush those people