[quote=windwardde]Not sure if my experience will be definitive, but here goes:
I have a Supercat 15, and it did not come originally with transom ports. The previous owner reinforced the transoms, and in doing so, added the ports, similar to what you are describing.
They were done well, and I have had zero issues, and actually like the fact that they are there. They allow me to inspect the interior of the hulls (at least the aft portion) and check the rudder attachments, etc...
Don't know if that helps, but for what it is worth...
By the way, I love the Supercat platform. For my particular needs and circumstances, it is truly the best.
Boom less
Board less - which is required in my shallow tide constricted bay
Easy to right with single sailor. I am 185 pounds and I use a righting line with no other poles or bags. The Supercat has an assist mechanism built in.
Hard to pitchpole, due to the large volume hulls
I like the rudder mechanism. Both from a structure and ease of release and adjustment. A friend on the beach has a Mystere, and it is a very nice boom less, board less boat, but he has had a few issues with rudder bracket replacement, and it seems to be a weak point in the design
Easy to pull a hull in 8-10 winds
Easy to drag up and down the beach (I am lucky enough to have mast up storage at the house)
Aquarius has been great on supplying parts when I have messed them up
It is a wet boat - but doesn't bother me at all
I have had a few other cats, and this is absolutely my favorite.[/quote]
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