My first cat was a 3.5. I lived on a small narrow lake in Alaska and it was fine for tooling around in light wind. I could tack without too much worry. I weigh 200# and that was about the max for the boat. My nephew weighs 280#, we both tried to get on it and both pontoons were under water...

I took it out in high winds, sheeted in, held on and leaned way out... and the lower hull started dipping below the water. I didn't pitch-pole as I was leaning back to stern, but the sail area to hull is just too small (IMHO) to trap on even if you didn't bend the crossbar due to no dolphin striker. It gave me the basics of sailing though. I now have an H16 and solo trap as often as I can get the wind to do so.
