I went back to the snag swim yesterday and went prepared...I put some 10lb fireline crystal on my pin that i've had for several years but never got round to using as I wasn't impressed with the look and feel of it. Anyhow, that was to be my mainline and I added a hooklength of 30lb powerpro braid.
The river was up about 1 1/2 ft and carrying a peaty colour so not good visability for trotting but spot on for legering really. The method I used was a cross between legering and trotting, I was stood mid river holding the rod all the time and using a lightish bomb so I could keep lifting the rod a touch which dislodged the bomb and allowed the bait (a pellet) and bomb to edge down the swim. First bite or I call them taps as that's how they feel to me produced a nice chub that looked about 5lb. Second tap and I hooked a fish but it only stayed on for several seconds before the hook came free, I think it had only nicked the skin on the fish so had no hold under pressure.
Things went dead for a spell until another tap radiated up the line and down the rod to my hand, this produced a barbel of about 6lb. After that I had intermittent taps resulting in another 13 barbel that i'd guess went up to about 9lb give or take a few ounces. As I was mid river I just couldn't be botherd weighing any of the fish since they didn't look anything to get overly excited about, I unhooked most of them with the without even picking them up.
Although I didn't catch them trotting it was still good fun and an enjoyable few hours