As a surfer that sometimes likes to roll the arms over in the summer slop as well, and long term Kiter on that stretch, I'm sorry to hear you feel the need to go down the path of authority, rules and regs. Kiting does seem to attract a minority of somewhat entitled look at me twits, usually with no or limited ocean knowledge, but I don't think the majority is like that. A couple of points to the above:
- I've only ever seen a couple of kiters with foils going in the waves through there over the years. Most are outside on the swells, so let's not make that the issues (a fin chop if coming up from duck dive is bad enough anyways)- Most foilers have worked out kite-foil is better for racing, so now it is the wingers and paddlers mostly on foils in surf. There was even a prone foiler just doing a huge down wind drift with wave riding etc last week. Definitely a disaster waiting to happen in Perth crowds eventually.
- north of thirds kiters are probably either end of down winder crew getting that last tack or two in, or it's the triangle guys who are trying to avoid the DWer crew as well. I'll kite down there myself when there's no one out surfing, but prefer not to if crews paddling, unfortunately not everyone's like that. Seen a few more windsurfers entering the arena around firsts in the past couple of summers as well.
- clubbies have done a good job in recent years chasing down dickheads going through the flagged areas close to shore and swimmers at scarbs, so maybe they will be willing to chew people out for you. - some signage at the thirds entrance probably will help majority understand the concept, but the dickheads will still do their thing no doubt (unfortunately).
Good luck, hold your ground, stink eye the **** out of em!!!