That might well be right gary but they catch fish in much much bigger no's than up here. Ie 30-40 whitings in a 4-5hr match is quite normal, not the 5-15 we do up here! (they weigh the same tho lol!!)
I used to fish with longer snoods myself and there are times when they do work, but im starting to believe that the shorter the snood you can get away with the better. Certainly a short trace keeps your hooks pinned to the bottom in a strong tide. its only when fish are finicky or you need movement that a longer snood can help.
I had my eyes opened in the Sea league finals at Pevensey when the guy next to me was pulling in treble shots on 6inch snoods when around him everyone was struggling. He was a 290yd chucker tho and won his zone both days!!
Another reason for short snoods producing is that there may be more fish competing for the bait and the short snood results in instantly hooked fish.
Im currently experimenting!!