You might be wondering what carp bobbins are. They're an essential piece of fishing gear for catching fish, especially those that don't bite right away! When you get one to take your bait and 'drop back' (meaning the line slackens), these little gadgets will make it easy to know when they've taken the bait by moving around in their container on your boat's floorboard or rod holder! That means more time spent casting instead of looking over at them every few minutes - which could have been spent reeling up yet another catch if not for this helpful tool.