stay on the edges of the field, this way u'l have one less side to worry about.
never have several ppl in the same bunker at once. all it does is limit you movement and get more attention.
plan something! before you play examine the field and discuss it with your teammates instead of just winging it. in many cases this makes a HUGE difference.
learn to shoot with your off-hand.
get in the front! Just remember, the opponents being in range to shoot you isn't a bad thing... it just means you get to shoot them, too!