A design for a kneeboard surf co clothing range

I need a design I can put on a range of clothing that will be marketed to kneeboard surfers. The design will be going on t-shirts, hats, sweat shirts etc.

Kneel On It Surf Company

Kneel On It is a surf company that specializes in kneeboard surfing. Watch this video to see what kneeboard surfing is
http://www.youtube.com/watch?v=3pdPxWQ-KFA We are developing a range of clothing for kneeboarders and want a design that can be placed on just about all types of clothes. The target market is predominantly male. The design should depict kneeboarding in some form and should show it as an exciting, out there, rebel type of activity. The design may be accompanied by some slogans such as "Only a kneeboarder knows!!!" and "you wouldn't understand.....It's a kneeboard thing."

- A kneeboard surfer should be included in the design. I'll leave the rest up to you guys.

- I don't want any pictures of wakeboarding or kneeboarding behind a boat. These guys are surfers!
- No wishy washy colours