When Carl was working on his F20 plans the I20 was still well supported and had no interest in playing with anyone. Times have changed. The 320 lbs club sounds interesting but no one wants to weigh boats before events. In fact, as i've seen here and in practice almost no boats ever get weighed. The 320lbs was chosen simply because it is substantially less than the I20, N6.0, Fox, etc. and would allow for any tinkering with the parts on those boats and would allow for new boats to be constructed without having to overbuild them to add weight.
what is the projected weight of the 20 footer you have in storage?