A simple question. How have people cleaned the inside of the stern of the Mk II hull? Through the aft port and starboard lockers, or by removing the aft water tank and "crawling in", I have zero chance of going through the lockers.
Second point regarding water in bilge. When there is a heavy storm here I get water in my normally bone dry bilge. Finally, I think I have found the answer. The fridge compressor on my Mk II is located in the starboard aft locker, I believe by the factory. In an attempt to duct cool air to the fan they have added a "y" fitting, right above the compressor in the bilge fan exhaust duct (plastic dryer hose). This Y fitting is open, an I believe in a heavy blow over the stern water gets into the rear of the boat and runs to the bilge. If you have a similar issue open the starboard aft locker stand on your head and look upwards and you will see the duct, which terminates in the hooded vent on the transom. See if there are water tracks evident. This will cause water to puddle in the indentation towards the stern.