Yes! Document every single trip, successful or not. When I began relic hunting in 1976, I read every scrap of paper I could get my hands on. One magazine or pamphlet said the successful relic hunter documents every trip with the date, location, finds, and a map, if possible. Wanting to change my status as a non-successful to successful relic hunter, I began keeping a record.
I'll even throw in weather conditions, everyone who went, the funny or strange ("Joe chased by cows. Never knew him to be track star prior to 5-4-08," "rained off and on," etc). Or, if I'm searching for a new site, I'll draw a little map as to where I've searched in order that I might continue the search in a new area should I not be successful initially.
All of this I keep on 4x6 cards in a plastic recipe holder. My total expenditure -- about $4, and $1.50-$2 every two years (more 4x6 cards).
Just to mention it briefly since I have ads elsewhere on FM, but these cards were the basis for my relic book. Now, you guys mentioning forgetting your dig trips? What better way to recall your trips than in a book?
I only mention the book in order to encourage you to jot down your finds, the date, and anything memorable that may have occurred. When we're old and hunting from four-wheel drive wheelchairs, I truly believe we'll be glad we documented our trips.
Good Hunting
Richard
P.S. Yes, I'm beginning to GPS my finds also in order that someone may be able to go into the sporting goods section (what am I saying? Outdoors folk are becoming extinct) I mean, the computer section at the local department store in the year 2025 and say, "Right here where this fancy schmancy computer display is floating in air I dug a 1802 Large Cent!"