getting air

Ok, so I've watched other riders getting good air from the corners on the cable and thats where I want to be. I've read various bits about gradually cutting to create resistance and then you will be pulled out. The question I have is do you change the board angle to make it release or just keep carving away. No one says what you do. Someone said imagine creating an arc with the lead leg so it will lift out of the water but I thought you needed 50/50 weight over both legs. Does the board skip out of the water in front of you and then you get pulled or is it more like being pulled over the board and the board leaves the water last. Can someone break it down exactly what to do to get air and write it so its compleatly idot proof and understandable for me.
cheers