I agree with Jake, and I have righted my Inter 20 alone, you get the wind under the sail and up it comes, I wasn't in the water more than 1 minute. But no matter what boat you buy, if you can't handle it, it's dangerous. A Jetski is dangerous in the hands of a novice. There is just about no real righting difference between a F18 vs. an I20, so just get what your local fleet is racing.

The I20 will not pitchpole as easily as some of the F18's however, (longer and fatter bows) so as Jake says, you shouldn't be upside down on the I20 in the first place unless it's blowing or you have made a mistake... which can happen to anyone, any time, any boat, any wind. So there you go.

Oh, and if you race alone, 230 is a great weight for the F16 Blade. Then if it's really blowing, you can bring crew, or not.