I take so much water up the nose while wakeboarding it's unreal. I am trying to learn to bearfoot ski, and the 1st time I tried it, I got so much water up my nose, I started to gag. Nasty! Also, falling off the wakeboard and smacking the side of my head on the water and forcing that water in my ear is one of the most painful things I've ever expieranced.
There is absolutly nothing you can do about it short of wearing ear plugs and nose plugs. It's part of the game. You hit the water 20 MPH face 1st, the only place it has to go is up your nose, and no amount of breathing out is going to make up for that.
Learn to fall. Just like tuck and roll. Try to take the impact with something other than your face to slow you down, or land backwards. That's all you can do.