Anything pushed upwind at over 8 knots into a gale will pound. Them's
the rules. I'm just recovering from a brute of a trip from New Zealand
to Hawaii non-stop on my 42' cat-- no problem usually, but with bad wx
luck it can suck. We don't usually pound noticeably with 3' clearance
and a short bridge deck, but this time there were some moments when I
thought the table was going to impact with the overhead... I'm feeling
more okay with this now that a good deal of rum has been applied.
Anyway, I have some friends who have a 36' Newick tri and they report
pounding on the wings in some conditions. This can be a problem for
them as their head is a whole in the wing deck and a very good butt to
deck seal is required in these conditions... I sure do love the way
that boat sails, but I don't think my colon would be up to that kind of
punishment for long...

-- Tom.