The very first time I got my Prindle on into the Raritan Bay I managed to hit 16.7 mph (14.5 knots). The water was warm and it was all fun and games... well, mostly - as long as you keep your head away from the boom. I met Bill who lives right by the boat ramp and he took me for a ride on his Hobie 16.
I learned that launching is best done with the bows away from shore, and that it's not so easy to come about without a steering oar.
The following week I found myself in the same location, but with significantly less wind. There was only a single gust of wind while I was out, and that one happened when the main was cleated and I wasn't paying attention... and me and my sister suddenly found ourselves being slowly dumped into the water. Capsizing wasn't the problem, as we soon discovered - it's getting it back up that's tricky. I brought a righting line complete with knots, and the boat didn't even turtle, yet our combined weight did not contribute significantly to changing the boat's orientation. The tip of the mast never lifted from its position about 20 inches under water.
Fortunately we were shortly rescued by a pair of wave-runner operators. The men had not planned for a high seas rescue, instead they came by to figure out what the odd shape sticking out of the water was all about. One of them simply grabbed the righting line and put his craft in gear - our boat came right up. Here we learned another important lesson: do not position yourself where the boat will land on you. In fact, it's probably best to hold on to the boat and go down with it.
I plan on adding a power righting pole since I'd like to sail alone.