How to pick the perfect pole cup

With so many different pole cups, pots and feeding devices on the market, which one is the best? Which one can you use safe in the knowledge that you aren't going to spill the feeder all over the place, or overfeed the fish?

Well Lee Kerry has the answer, and here's his simple and straight-to-the-point guide on which pole cup you should be using, particularly if you are a regular visitor to commercial carp waters...