The stuff about running a generator every month is over valued. Most modern generators have epoxy bedded windings and do not have the moisture trouble that older units (even like mine) might. Just leave it alone for the winter, but in the spring, get it out and warm it up before you put load on it.
Michigan boats with generators can't run them when they are on the hard for the winter. They sure aren't stored inside (not without removing the mast(s) and they don't have problems. They do require the prescribed maintenance.
A lifelong waterman and his bride going dry places for as long as the fuel money lasts.