Question: What are the shorthanded Express 27's doing to seal their main hatch in-case of a bad wipeout?

I put my boards in and close the hatch but but when running a kite in 25-30 singlehanded I wonder what others are doing?

Having a Tuttle rudder and pushing the boat with MH up to 26 true in big waves it is a dream to sail. But I know there will be days with more breeze and nights when I am on pilot while attending something else and she will go. So just looking at my options while she is in my shop for the winter.

Thanks in advance for the input.