Marketing Windsurfing in the long, distant, historical past (feel old now?) was so much easier
because it looked like this:
A Sailboarder makes his way to the shops for some new clogs. Now there's beginner gear, family gear, wave, freestyle, freeride, slalom, race, light wind, cross-atlantic, red bull extreme... it's no longer a simple, one-dimensional sport.
I guess you have to find your target market first. I'm not sure who they are, used to be 20-30 year olds, I guess it still holds. Mostly male. Guys that want a moderate adrenaline rush, in the water, and have probably sailed or skated or surfed or similar in the past.
...Snowboarders. The two seasons line up nicely too.