Line counters on reels and downriggers are not accurate scientific measurers. So you're fishing and you hear a report of 4 mature kings off a plaid dipsy # 2 setting, 160 feet of wire. So you put on a plaid dipsy and set it on #2 and 160 feet of wire and nothing. So you play with it awhile and you have to let out 175 feet of wire before you connect. Now you're cooking. You set up that same rod and tackle with the same settings that YOU caught your fish and go from there. The name of the game is repeatabilty of the program that works for you.