Exactly. You just never know from one day to the next. That's why I like constantly changing speeds to see what they want. I will hit the "rabbit" button on the remote, let it take us up to 2.3 - 2.5 for a few seconds, then back to the regular speed. Or, put the kicker in neutral for a few seconds and then back in gear. I also cut the speed when I get a big fish, so if more lines fire while we are slowing down, I might try keeping it slower for a while. On the other hand, if I am getting bites as the boards are going out to the sides (faster), I will know they want it fast. The bottom line is, there is no set rule for speeds, even in really cold water.