A stillwater technique — fast-stripping brightly colored "blob" flies — is hammering stillwater trout in competitions in Britain for the last 5 years

The highly effective, ball-shaped blobs, made from various fibres, promote an aggressive, chasing reaction from trout when pulled quickly through the water. Unlike traditional flies, such as "nymphs" or "daddy-longlegs", they do not resemble a living insect.

Purists argue that blobs, which are permitted in major contests, give an unfair advantage over conventional methods and make trout fishing too easy. England fly-fishing champion Chris Ogborne was so opposed to them that he left the England team, and says he has received hundreds of letters of support.

Russell Hill, editor of Trout Fisherman magazine, said: "The blob craze has made trout fishing very easy. They are absolutely caning fish and winning every match. Gone are the days when you hear of a man winning a match with a dry fly or a nymph, because the younger anglers are going to these reservoirs and ripping blobs back at breakneck speed and catching their eight-fish limit in half an hour. There’s a massive debate going on."

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