I have a Yanmar engine maintenance log with service intervals in a binder on the boat, I also have a checklist in the binder that is completed before each outing that covers everything from engine condition, fluid levels, battery check, electrical, plumbing and thru-hulls,
rigging, safety gear etc etc. The skippers log also goes into the binder at the end of every trip.
In addition to the logbook I have a notebook that lives in my seabag to remind me of items that need to be done so I don't forget between trips to the boat. It's very frustrating to have to postpone a departure until after WM opens because you forgot that a certain block or piece of
rigging had broken on a previous trip, although I also keep a healthy spares list as well.
This sounds like a lot of work but in reality I am constantly keeping a mental checklist from the moment I approach the boat and can complete the checklists from memory in just a minute or two while I'm waiting for the engine to warm up.