About the charging the battery with engine... Aren't diesels supposed to be ran as often as possible like daily basis unless they are winterized? That's what I know from my previous power boat... I had a automatic starter and shut off for the days I couldn't get to the boat back then...
" I refuse to engage in an intellectual battle with an unarmed man!"
Materialism: Buying the things we don't need, with money we don't have, to impress people who don't matter.