What with blackmouth, crabbing, and sturgeon in the Columbia my boat doesn’t really get laid up but, if I think it might freeze I'll drain the exhaust manifold and outdrive. I'll also start it and let it run for a while once a week. If the weather isn’t too bad I'll just take it up to Mayfield and pretend to fish for an afternoon. Before springer season gets rolling I'll change all the fluids, replace belts, replace zincs, engine coolant, etc as needed. Basically treat the engine as if it were a car engine you don’t plan to drive for a while. That is, after all, what it is.