The boat I sailed on was a Planecat 18. It had square looking flat hulls. It was a dealer or factory demo. It was cold and only 3 people showed up.I was the only person willing to go sailing a second time.

My impressions of the boat were; slow in light air, fast but hard to control in medium air and weird things happened (it popped off plane or tried to spin) when it started to fly a hull (that's when the Hobie 16 passed us). With experience you would get used to it's quirks and anticipate what it was going to do but, there was nothing about it that inspired me to want to try.