everytime i try to go back into the wake to get some air it catches the front of my board! what should i do ?

Make sure you put more weight on your back foot, and edge all the way throught the wake. Don't try to jump when you get to the wake. This takes the board out of the water end causes the front edge to catch the wake instead of riding up it. Approach the wake in a squated position and then just stand up when you start going up the wake. You don't have to jump, just stand up. Teh board was designed to do the work for you.