We set out from Gayton on the 25th July and arrived in Peterborough on Thursday 30th and whilst there is weed, there was never enough to cause any hold up. We never had to open the weed hatch once. The only small problem we had was being held up for four hours at Wadenhoe through a power outage. Apart from having to dodge a few downpours I have to say that the Nene was beautiful. I suppose it's a matter of perception mixed with a little bit of luck eh?
Just to add, whilst the Nene was a breeze, the Northampton Arm - especially between locks 13 and 14 - was like the Everglades in places!!