. close seacocks after flushing engine
with freshwater, change oil
, spray fog oil
in the air filter conduct and put a plastic bag with tape , oil filter
to, change it,
Top Off bateries with water , if you have a wind generator
, swicht off or remove blades better, big solar panels
need to be inside of the boat in case of a big blow,
around out, same as fenders , life rings etc..., keep the deck
clean , no loosing stuff around, toilets flushed and cleaned , i use engine coolant
for long periods in the hard, put a small amount and pump some strokes , later close seacocks and valves.
Leave the speed or depthsounder if you can out of the hull
, so rain water in case of flooding can drain out, bilge
pumps in auto, bilge pump
discharge valve open, all the cokpit lockers secure , remove loose runing rigging
, secure main boom to the deck
, same for spinaker poles etc...
All the valuable electronic gizmos out, better in a secure location , chartploters in cokpit , gps
, radios etc...
Ask the yard if is posible to screw the straps to sand screws , 3 for each side with a good angle , straps tend to be loose in rain and heavy winds , so think about to tie together straps, jack stands plenty, in each side , tie together or braced together by welding or chains, put some plywood
pads in the legs , rain tend to sink jack stands , keel
same , be sure is welll suported by wood blocks,.
Dingy deinflated and secure inside or in case is not posible in the hard ,outboard to.
Idk if i remember more things i post it... Good luck..