Want more height in the jump?

This season is really my first full season of wakeboarding. I have a 2005 LF Trip. Riding behind an 02 X-star with stock ballast 4-6 people. Ride at 21 with 65 foot rope. When I jump, I can get wake to wake, but it seems like I'm getting no air? Maybe 1-2 feet off the water. I listed my equipment and stuff just as an fyi because I'm sure it's something in my form or lack of form that is causing this. I've done some videotaping to try and figure out what I'm doing wrong, but can't pick out any specific thing. It looks like I'm taking a progressive edge and standing tall at the wake, but I don't seem to be getting much air? I think part of it might be that after I stand tall or push off the top of the wake, I don't bring my board up to give that illusion of more air? I know video or pics would help, but any advice at all? Would be nice to be able to hook up with some advanced riders for a few days to learn from them.