The duo looks like an awesome design, just bookmarked that just in case!
If you want a cat that will operate in actual surf, rather than just get out through it, the windrush 14 and 12 are both excellent. The 12 particularly is pretty indestructible. Could consider using the windrush style spade rudder on the duo, really practical in surf, just surf straight in up the beach and no rudders to drop in going out.
I've tried H16s and 14s in good sized surf, not so good, prone to reverse pitching, the high tramps are good though. Quite fragile if you tip them over in the surf.
If you want a cat that will operate in actual surf, rather than just get out through it, the windrush 14 and 12 are both excellent. The 12 particularly is pretty indestructible. Could consider using the windrush style spade rudder on the duo, really practical in surf, just surf straight in up the beach and no rudders to drop in going out.
I've tried H16s and 14s in good sized surf, not so good, prone to reverse pitching, the high tramps are good though. Quite fragile if you tip them over in the surf.