Without a doubt this rig, in various guises, has proved to be my most successful so far this spring. Various feeders have been tried and I have settled on the Drennan's for now. The only 'faults' with the feeders are that the tail rubbers are a bit of a slack fit, easily cured by a dab of super glue, and the hole through the tail rubber is very small - only a problem if you are visually handicapped!
All dead simple. Mould some groundbait laced with hemp and pellets around the feeder, chuck the lot out, set the bobbins, sit back and wait.
A larger swivel could be used for attaching the hooklink, but I like to make the link come out stiffly from the feeder using the silicone tubing to completely eliminate tangles. While I have mostly been using two grains of plastic corn the rig works equally well with other baits, popped up or on the bottom.