These are the things out there that keep me up at night:
Captain Currie did an interesting study on the M boat:

His comments are in the post: http://www.macgregorsailors.com/forum/v ... 05#p171071
There is a lot of survivability to the M hull if you can manage to keep the rigging in one piece. I know the rudders are weak but the answer to that is to just attach a rudder to the outboard instead of using the stock rudders in a storm - easy fix.
I think the hull can be made waterproof pretty easy - and the whole point is to be able to turn turtle with no damage. If you can accomplish that, then the only thing left to do is figure out a way to control the boat - a tiller from inside the boat. I think a storm can be a survivable event if all these things are covered. As the picture shows above being in the cockpit makes you really exposed. Great for everyday sailing but not practical in a bad storm.


