We lived abord briefly on Lake Erie. One thing we did was buy an old van to store stuff we didn't always need but wanted nearby (power tools, roller blades, some kids toys...). One thing I wanted to do to it was add some cabinets and a clothes bar to organize things a little better, but I never got around to it. For the winter, before shrink-wrapping the boat, I framed in the cockpit and insulated it to give us an extra room for the winter. This made a great difference. I also removed the wheel and added a closet rod across the back, and hooks on the wall for coats. I ran a set of rope lights around the upper edge for lighting and it worked great.
Catalina 38, Hull #112
Grosse Ile, Michigan