what angle would you suggest to take for big air?....90deg. edging through or a litttle less...

Try reading Trick Tips on progressive edge and going wake to wake.

progressive edge, man... cant stress that enough

The last Wakeboarding Magazine has a great article on getting air

If you edge too hard (i.e. 90 degrees to the boat) you will get pulled off of your edge and will flatten out the board. You will go up b/c you are going fast but to get real air you need to edge up the wake which means a lot less than 90 degrees (exception: Darin Shapiro when doing a raley). Get Higher Education and watch the angles the pro's take.