I read a piece on
Fuel mileage Trawler v Sailboat, same trip same time of the year, in the End the Trawler spent 900% more then the Sailboat on
Fuel and got the same mileage.
You might find a motor-sailor that you can drop the mast from and install a 16' 4x4 as your antenna mount, Also your
radar reflector, Steaming Light,
Anchor Light ,cross bar for flags and Deck
lights and it will be easy to drop if you need to get under something very low. Then when you get back you can put the mast back on and sell it .
Best of luck on your Trip, it is a Trip i would love to make myself. Fair Winds