Thanx for the photo, Russ; we did the same thing on our 33 footer, tho we built it ourselves with plastic dropcloth and PVC pipe from Home Depot (did someone say cheap?) and loved the greenhouse effect you describe. I'd be worried about condensation, too - especially when those cold winter days inspire you to make a pot of soup <*grin*>. our first winter was tough, then in spring we found mold everywhere, food went bad, envelopes glued themselves shut, and on and on. After that we lined lockers with insulation that looks like silver bubble-wrap (also from Home Depot), and put things that were particularly vulnerable in ziplocs. We also lined the cabin top with it - our boat has no headliner as it was made for southern climes.
About the head, we simply use a bucket and carry it ashore. Sprinkling the solids with powdered bleach does a great job of minimizing the smell.
PS, I find it a funny coincidence that we also from MI - our hailing port is Northport, MI, tho we're currently in the Chesapeake, having just completed our 4th winter here.
Last edited by eryka; 03-16-2006 at 11:38 AM.