I don't know what that guy's deal is, he's all over the place. Maybe he's just not getting any, and hasn't got anything better to do after work?
Rec.Windsurfing is a popular hangout for him, and Mo has even started a MockuMentary in his honour. Have a look at
http://www.teamcoyote.net/shot_otd.html A lot of it is 'had to be there' humor based on stupid comments or questions he's made on rec.windsurfing, but you get the general idea. There's also a list of his known 'identities' on there.
Those guys have pictures of him, and know where he lives.. doesn't seem to slow him down much though!
Before anyone asks, no, I'm not him (or any of his annoying alter-egos). I ride small, modern gear in NZ, although I will admit to having a really old plastic Bic longboard hanging in my garage.
I don't have any useful ideas as to how to stop him (shotgun maybe?

), or filter out the BS, but agree that jumping all over newcomers and beating them up 'just in case' isn't the right way to keep people keen on the sport (or to show just how friendly you aussies really are.

)