How to Keep a Fishing Log (and Actually Learn From It)

Fishing is a pattern game. The fish that were shallow on a falling barometer in late April will very likely be shallow on a falling barometer next late April. Memory compresses a season into a handful of highlight days; a log keeps the boring trips too, and the boring trips are where the pattern shows up — because they tell you what did not work.

You need roughly two dozen logged catches before patterns start to be readable, and a full season before month-by-month trends are trustworthy.

Keep it short. If logging a fish takes more than about fifteen seconds, you will stop.

• Species — the single most important field for later filtering
• Length and weight — even estimates are fine, as long as you are consistent
• Water body and spot — a pin is far more useful than a name like "the north bank"
• Date and time of day — time of day drives more patterns than anglers expect
• Lure or bait, including color and retrieve
• Depth and structure — weed edge, drop-off, laydown, bridge piling
• Weather: air and water temperature, wind direction, cloud cover
• Barometric pressure and whether it was rising, steady or falling

A trip with no fish is data. If you only record successes, you cannot tell the difference between a spot that produces and a spot you happen to fish often. Record the trip, the conditions, and what you threw, even when the result is zero.

A notebook is the easiest to start and the hardest to analyze. A spreadsheet is analyzable but nobody fills one in with wet hands in a boat. An app wins mainly because it can capture the tedious fields for you — GPS, timestamp, weather, pressure and moon phase are all knowable from your phone the moment you take the photo, which means the only things you type are species and lure.

That is how FishFactor is built: take a photo, and location, time, conditions and a suggested species and size are filled in automatically.

• Sort catches by month to find your genuine peak weeks per species
• Group by water body to see which lakes earn the drive and which do not
• Group by lure to find the three baits that produce most of your fish
• Cross species against month — that grid tells you what to target and when
• Look at time of day: many anglers discover their best window is not dawn

Do this review twice a year — once mid-season to adjust, once in the off-season to plan. FishFactor generates these breakdowns automatically from your logged catches under Catches → Reports.

• Logging days later from memory — conditions get invented, patterns get poisoned
• Recording only trophy fish, which hides the everyday pattern
• Vague spot names instead of a pin you can return to
• Changing units halfway through a season
• Never reading the log back, which makes the whole exercise pointless