SOS boat
This December BoatU.S. magazine, page 63, has a picture of our 700+ member club (Singles on Sailboats, SOS for short) entry last year. The boat's owner offered her boat, Carolina Girl, as long as there were penguins in the display... and there are. You can't tell there is a series of figures sledding down the Christmas tree.
No, we do not hail "SOS" on the VHF; we use "Whisker Pole" instead.
Update: FWIW, That was in 2009. I should have known better since in the pic I am on the bow, but last year my band played for the club's after-parade party.