Don't have my boat checklist anymore... but here's the one for my fifth wheel trailer..it may inspire your formatting... Made it on a spreadsheet so I can easily change things. Just start with what's off the top of your head and fine tune as you go......
Items I remember from the boat......(to be performed before/during/after etc)
Thru Hulls (closed for storage, open as needed underway)
Electrical System Configuration
Bilge Pump(s)/High Water Alarm(s) Check
Shaft Log Seal
Fridge Door (locked, cracked when off)
Loose Items Secured
Currently boatless but looking. Avatar is my first boat....Holland, 1965 ish.....