Touche' has a day/night solar vent in the head. Parts of the year it is covered by me storing the dinghy on the foredeck.
I find that the fan powered heaters work well even when the solar fan is idle. I have two of these: https://www.caframolifestylesolutions.com/product/marine/stor-dry/ When I leave the boat I use one year round and add the second one for colder nights. If you keep the cabin air above the dew temperature, you won't have a lot of moisture except perhaps on hatch and portlight lenses. Dennis C. Touche' 35-1 #83 Mandeville, LA
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