I used to fly one wing low through all maneuvures when flying in a crosswind, it's a total cheat but you get by. That said, I got pinged at the last comp for not having "wings level" throughout the flight, and lost points.

Now I end up working the rudder and crabbing to get my line, but make sure when you do it, you cant the nose into wind with rudder, and then apply a little opposite rudder to stop it weathervaning.

There's been a few threads on this, a bit of searching will pull up some interesting facts.