Your best bet is to talk to the, in your words, "knob ends" at your home town, walk up and say G'day, talk about how good the surf was bla bla bla, then once friendly start talking about the issues.
You might find someone dosent even realize they are pissing you off, will feel bad that they have been pissing you off and change their ways.
They might even tell you that your pissing them off getting in the way some how that you didnt even realize your self. Win win.
The majority of people in life are pretty decent.
And if they don't...and say get stuffed old timer...let their tyres down when their out in the water






lol

Starting a forum thread that they wont probably even see wont help.
Oh, and back on topic, kite foiler will absolutely smash a slalom sailor without a doubt, always, every time.