Possibly the most common caged centrepin in general use is the J. W Young Rapidex, a highly regarded reel from a highly regarded manufacturer. What isn't commonly known, is that Grice & Young marketed several caged reels, most were fly reels, but also at least one centrepin.
Luderick fishing isn't difficult provided you follow a few basic rules. In another article I have talked about getting the correct bait, presenting the bait at the correct depth and the type of gear required to get the float into the correct position.
But, what is the correct position? What makes a good spot, and where do fish hold once you are in that spot? If you can answer these questions, then you have a fighting chance of catching a few luderick.
This article attempts to give the novice some ideas using a few examples.