Because of some remarkably bad weather here last weekend (winds up to 50-60) I was unable to get to my boat before it was hauled by my unusually efficient yard. Unfortunately, this also means my Hunter 410 with two holding tanks was hauled before pumpout. I'm not sure how to leave this for the winter. No pumpout facilities at the yard, don't think I could dump it out on land. Any ideas how to winterize two quarter-full holding tanks? Just pour a bunch of antifreeze in?Appreciate any advice.S/V Breathless h410 #250 US 51855