At the risk of offending those in here who have little or no interest in boating....
I removed my damaged propeller from the Bayliner 175BR an hour ago. Man, that main nut was snug..even after bending back the tang on the washer. There was a white grease product on the spline but there didn't appear to be any grease on the threads where the big nut sits. I was able to use a 27mm socket to remove same.
Then I removed the battery to it's place in the basement and attached my charger to top it up. That should do it for winterizing the boat, although I have to cut a few more lengths of line to properly secure my Navigloo cover.