Just got back from my hols, so apologies for my late reply.
Went to Morton and fished the stretch near the farm where you park next to the farm and walk across a field.
When I arrived I was stunned to find how shallow and clear the water was and it was hardly moving at all.
I walked about 100yds downstream from a small wooded area on the far bank and found some deeper water at the end of a shallow, streamy section. There were plenty of trees hanging over into the water and frankly it screamed barbel, so I was feeling quite confident.
I used maggot feeder on one rod and open-end groundbait/hemp feeder with meat on the other, casting close to the far bank cover. Unfortunately I had no bites at all on meat and just a string of chublet on maggot. I tried trotting caster with hemp/caster loosefeed, but again just managed small chub.
By 1 O'Clock I decided it was time for a walk to try to spot some fish as the highlight of my day had been watching jet fighters screaming overhead.
About 100yds further downstream I spotted half a dozen large chub in a streamy run and several longer dark shapes drifting in and out from some far bank cover. After watching for a while it was clear they were barbel and one of them looked close to double figures, so I hastily moved my gear!
I tried the swimfeeder approach one one rod and trotted casters with the other rod and first trot down I managed a chub of about 2lbs. Thereafter the fish became very cagey and I managed only a few more small chub to trotted casters.
The swimfeeder rod stayed motionless, so I tried a new technique for me - trundling meat. Several times I had a few nive barbel in the swim and edged a piece of meat in front of them, but not once did they respond to it or any small freebies I flicked their way.
With about an hour to go before I had to leave I tried trooting right in under the tree hanging over the far bank and finally hooked a barbel. Unfortunately the 4lb line wasn't up to the job and the line parted after about 20 seconds. :-(
I tried stepping up to 10lb line, but the fish were obviously aware of the line in the clear conditions and spooked from it several times, so I ended up blanking as far as barbel are concerned.
I was surprised how poor the fish responded to meat, but I'm convinced that in better, less clear conditions this stretch could be productive. The walk to get to it is a bit of a pain with a lot of gear, but you're unlikely to be competing for swims down there - I saw nobody all day and no other cars were parked at the farm.