Outstanding! There are a few things that need to be done now so that your boat will be fit for action in Spring 2019.
Clean the boat thoroughly, inside and out, remove any vegetation and encrustations from shafts, props, rudders, hull and struts, wash down with a jet/power-wash and wax the upper surfaces. Whilst washing down look for any blistering, damage and cracks that may need to be repaired, you may see these blemishes better when the surface is wet. Thoroughly inspect on-board hardware, machinery, fixing points etc., clean them and where necessary organise any repairs, prevent issues like the spread of corrosion and take care of any replacements during the off season. Clean and repair any canvas or plastic covers etc, check out sails and maybe consider a new set for the Spring, there are some amazing products on the market and a new suit of sails will make your boat stand out from the rest.
Check for leaks – keep an eye on the strainer, valves or seacocks, or any other areas where you may think a leak is occurring, check it out now and make any necessary repairs.
Remove and Store everything that you can, for a start it removes the temptation from opportunist thieves. It’s unwise to leave all your stuff onboard your boat subjected to the elements during the off-season, plus it contributes to the gathering of dirt and moisture in your vessel’s storage areas.
GPS/chart plotters, radar displays, VHF radios and other electronics that not fixed should be removed and the loose cable ends/connectors wrapped in electrical tape.