Note on dehumidifiers. I have two of the heater/fan dehumidifiers I inherited from the PO. These are sold at West Marine and others. They are round about 12" in diameter and about 4" high. These dehumidifiers don't require a tank as they basically just circulate warm air; (kind of the inverse of a vaporizer) I am not sure how effective they are as I have not measured humidity with and without them running, but two seem to keep boat pretty dry. I am inclined to try a dehumidifier that does collect water in a tank to see if there is a difference but I was concerned about overflow, but it is interesting to hear from several of the posts that there is an overflow that can be run into the sink.