Cliff
When I am away I have a guy that looks after my boat, but here is what I would do..
1)Disconnect the main power supply
2)Switch all electric off (leave bilg
pumps on, as they should be wired to batteries bypassing the switches)
3) Close all windows and
hatches
4) double the ties and ropes
5) tie halyards and all ropes away from mast so they don't schaffe
6) lock rudder
7) close all valves and thru hulls except bilges
8) Now its pretty warm, but in the winter leave anti humidity gel boxes inside
enjoy your vacation