While I do not disagree with you, permit me to ask you a question.
Leaving the boat without shore power, ignoring the lack a A/C and the probability of mold, add in a couple of solar panels to keep the battery charged and bilge pumps "available", the boat should electronically "float" forever?
Why not put it in dry storage and never worry about it electrically?
Under covered roof, such as our boat is, solar panels are no use during berth days.
Mold is not a problem in area we dock. Breeze that blows keeps interior refreshed via vents for that purpose.
There is of course a chance of sinking due to leak that occurs. That is why I mention to be sure boat does
not at all leak. Item I forgot to mention in post #34 is that I have one of three bilge pumps hot wired to fairly large house bank; it has float switch incase water were to seep in. I've no proof, but if need be I feel that one pump would go many, many cycles before batts went dead. In boating since late 1950's my family and I have not ever had a boat sink nor anywhere near sink while keeping them all isolated from docks. By doing as such we have little to no electrolysis corrosion problems.
In worst case scenario, that our boat were to unexpectedly begin slightly leaking... and the hard wired bilge pump were needing to occasionally kick on... some person at the dock would hopefully report the circumstance of pump occasionally cycling or we would simply be paying pay a visit, as usual... other wise eventual blub, blub, blub would occur. Also, I would like to say, that I always open hatches to engines more than once while at boat and never see any water in bilge. We keep her very dry! If I do ever see water I would find the source or haul the boat. That's why I pay insurance!
BTW, I, nor any person in my family have ever had any sort of boating insurance claim. For over 60 years insurance companies have been making make money hand over fist off of us!
Dry storage would be great; with simply a telephone call to get the yard to launch the boat just before we arrive to play! We live 100 miles from the marina; 2 hr. trip! However, we do not have that capability for our 21K lb.[when loaded] boat. Wish we did. If so, I'd love to keep her out of the water in covered storage in wait for our next visit.
We leave tomorrow am to see her; getting ready for summer and all the fun that time of year enables. This two day weekend trip I plan installing new windlass and checking out recent work performed on the 1977, 7.5 kW Kohler gen set... I understand that is running perfectly again.
