The fox was configured to the F20 class rules in Europe. The I-20 has an oversized sail plan (it does not fit the F20 rule). The two boats were never on the same playing field.

As far as beaching... the hulls are clam shell like most all current high performance cats. You can not continue to beach and drag this type of boat without compromising the seam at some point.

Hobie Cat USA never committed to providing the Worrell 1000 with boats. The reverse bow would have been the biggest drawback to the design for beach landings.