To be honest, I do not see that anyone is doing anything dreadfully wrong in their approach to winterizing their coaches, if it works for you with no problems keep doing it. I winterize my coach, leave everything open, refrig., etc, run engine/gen set every couple of weeks. I put a battery tender on both the coach and the chassis batteries and that ensures that the batteries are always fully charged but not over charged, personally I just do not like to leave the coach inverter/converter on. What ever you do just make sure the water levels in the coach batteries are full all the time (they are not maintenance free) I debated about covering my coach this year and actually ordered a cover but subsequently returned the cover and will just keep shoveling the snow off, I just worried about the coach not being able to breath, possible paint damage, and then the inability to actually drive the coach when the roads are clear here in NH. Again, to each his own, ideally I would like to have a nice heated barn to put the coach in but that is not going to happen anytime soon for sure! thanks, Ron G.