We're sure you already know most of the following info but perhaps you'll discover something you overlooked. This list also does not speak to specific equipment needs, i.e. pickling of water makers, decisions about removal or tying down of wind generators, etc. Due to differences in installation, age of equipment, etc., you'll need to consult your own manuals about summarizing such items.
Rigging and sails:
-Remove sails including roller furling jib.
-Consider removing lifelines. Sunburn and dirt will age them quickly.
-If you have internal mast halyards, pull halyards into the mast with throw away line and bag at the base of the mast of cover in some way. Halyards and sheets left out will be extremely dirty and aged. After removing main sail, consider putting mainsail cover back on boom to protect boom, base of mast (winches / pin rail), bagged halyards and reefing lines. Wrap line around cover to secure from high winds.
-Those with external halyards should consider completely removing them by using messenger line.
Below:
-Remove perishables.
-Don't stow anything heat sensitive directly under decks-particularly if you have teak decks.
-Don't stow spray paint, WD-40 or anything with propane propellant.
-Put up curtains or foil in ports.
-Disconnect antenna leads.
-In the event of switch failure, remove fuses from bilge pump, gas sniffer or anything else that inadvertently turn itself on and drain your batteries. Consider disconnecting amp hour monitor as well. Over many months, the small light in the unit will drain your batteries.
-Remove electronics to dissuade theft.
-Videos, CD's and cassette tapes should be stowed down low or removed.
-Remove your medical kit with temperature sensitive medications.
-Consider leaving a few buckets full of water for additional humidity. Some folks will tell you that it's plenty humid here in the summer. However, those who put buckets of water around their cabin came back to empty buckets.
-Wash out fridge / icebox well with bleach and leave open.
-Put out cockroach trap or boric acid - particularly in the fridge (with lid off) and sinks.
-If you have screens on your dorades, consider leaving the dorades on. Solar vents are helpful, too.
-Take down items hanging on sticky back hooks for double sided tape. The sticky backing tends to tail in the heat.
-Heavy duty sticky back Velcro seems to survive o.k .
-Try not to stow anything on top of closed cell foam cushions (i.e., "Bottom Siders").
-The item on top of the cushion will leave a permanent indentation.
-Lubricate port gaskets with silicone grease.
-Lubricate galley and heat piston type sea water pumps with silicone grease.
-Remove batteries from all battery operated gear and store down low.
-Flush head and sink lines with fresh water.
-Run a bit of mineral oil through the head to lubricate the seals.
Engine:
-Change engine oil.
-Flush engine with fresh water and vinegar.
-Remove raw water impeller packing Vaseline and zip lock. Heat and being in one place for so long tends to permanently misshape the vanes.
Outside:
-Remove everything outside on deck.
-Do not use plastic bags to cover stuff.
-Immediately after haul out, scrub the bottom before allowing it to dry out. Carefully check hull for damp spots after hull dries for blisters or voids. Consider opening up any blisters or thorough drying from the summer heat. Close all thru-hulls except cockpit drains. Plug up with cloth to dissuade insects from taking up residence inside.
-Put bronze or vinyl wool in cockpit drain thru-hulls to allow water to run through and to deep bugs out.
-Plug up any other orifices (i.e., vents, tanks and gaps around hatch) otherwise you may find several generations of insects inside-particularly spiders.
-Check the date for your life raft's next service.
