I think, if the tramp netting/fabric was a little less dense, windage would not be a problem - of course it would not protect from spray either. As for the question why to own a sailing kayak vs a sailboat, I am happy to share my buying decision:
I had a 42 foot sailboat boat and we usually sailed between 5.5 and 8 kts if winds permitted. From a pure sailing perspective, I have much more fun in the AI, and a lot less work too
My biggest argument for the AI kayak vs a dinghy, say a Vanguard 15 or a Hobie Cat for that matter, is setup time. I live near the lake, have lovely neighbors on the water that let me park the hobie in their backyard, and I can get the whole thing ready in 10 mins. I go out for 1 hour or 90 mins and come back. The whole deal is less than 2 hours. I can easily fit this into my schedule, e.g. instead of going to the gym, and have a blast.
I also looked at the Windriders, they have a little more staying and speed power, but again the prep time is a whole diffferent story. My neighbors would not permit that size boat parked in their yard either
Finally, the mirage drive is just fabulous. It takes a lot of stress out of launching and returning, plus you can always paddle home, if the wind dies.
But all this will not prevent me from trying to get my AI going faster, if I can.