It's a simple database that I enter all fish caught into. I keep info on weights, lengths, date caught and sometimes who caught it (keeps a little friendly competition). I then have another table that has the standard weights and lengths for LMB. This allows me to run reports so I can see where my fish stand compared to the norm. I also have reports that show total number caught, average lengths, average weights, and total weight caught per year.

This helps me make some management decisions.