hitting the wake

When you guys cut back towards the wake and right before you hit the wake do you guys lock your knees to gain more height. Or do you slowly stand up straight and not let your knees bend. I am just wondering if there is a certain way to hit the wake which will allow you to land out in the flats farther than just wake to wake.
thanks
Dom

http://www.wakeworld.com/Articles/2001/Basics.asp

... Standing Tall- At the peak of the wake before take off, you want your entire body to be as straight up and down as possible. If you are crouched over and bent at the knees or at the waist, you will lose everything you built up. Remember, the way you leave the wake is the way you will land, so if things aren't going right then check your landing. Most people bend at the waist or pull up there knees as they ride up their wake and it kills their pop.