[Capt. Debbie]

Funny thing with outboards- like all engines I guess... air accelerates.

Do you keep them tilted down so they do not freeze? No real effect.

As was pointed out, even if you tilt up a few trips won't make any real difference.

Air makes the salt dry out. And the chemical activities begin.

When we do salvages on sunken boats, the hustle begins when the motor hits air again. You've got hours to get it moving again. Leave it overnight and youre SCREWED that motor will never turn again absent a VERy large plumbers wrench.

So leave it titled down and the effects are almost nill.