In CT I have the boat shrink-wrapped at season's end. The
shrinkwrappers include vents to allow ventilation and prevent moisture
from being trapped. Come Spring, I don't keep the shrinkwrap on too
long after the first few warm weeks or I end up with a mildew forest
onboard - as I did one year. Ick.

From the end of Oct to middle May it sits on the trailer in the
driveway. I put 3 or 4 Damp-Rids in to help absorb any moisture.

Carpet, lifejackets, electronics, leftover food & soda should all come
out for storage. If your boat won't be used you'd definitely want to
winterize the engine even if the temps don't get low enough to freeze.
The anticorrosive properties of the antifreeze are helpful.