Guys,
what Matt is concerned about is that in the BR open boat the internal waterballast system raises the floor around 8 to 10 inches, so if one took the open BR as it is as substrate in order to get comfortable sitting headroom inside the cabin, the cabin roof would have to go up by that much too, making it -so Matt judges- unsightly.
So I have come up with an idea how he could do away with the internal waterballast without sacrificing self-righting, so then the cockpit floor can be lowered, so then the cabin would be high enough again for comfortable sitting inside without being visually obstructive from the outside.
I admit it's a longer than usual chain of thoughts, but I had thought I had made it clear what all this is aiming at: That yes, one could get a good and spacious and inexpensive basic cabin sailer out of the existing BR hull mould.
-I think.