Can someone help with 3rd person physics

I'm not a scripting guy so any help is appreciated! I'm working on a game similar to rip curl surfing and can't understand how they get the in air rotations as well as the control buttons to work at the same time. If anyone has a good solution for a way to have controls like rip curl please post it so I can try it out because I have no clue. Right now I have a character controller setup that I'm not very happy with at all. I know it's a lot to ask but I know there are very talented people out there willing to help out a noob.

Thanks in advance!!!!