Very enjoyable:
good moorings at Hilgay, and a fantastic butchers & bakers (and just about everything) shop up the hill
lots of nice winding bits of river, lots of wildlife etc
a vast and rather scary sugar beet factory. We didn't see anyone working there, though I think it must still be operational! Looked like a set for a 1960s gangster movie
two sizeable lakes just upstream - we have anchored before
some sections where the flood banks are a long way back from the river, so you can see the natural state of the land (soggy!)
some good solid bank where you can moor between the cutoff channel and Stoke Ferry - that village is worth an explore as well. We moored on the straight section in the middle of this map, on the north bank - good footpath access to the village.
a GOBA mooring at Stoke Ferry, in the middle of the campsite/caravan park (on right hand edge of the map).
fair turning at Stringside drain at the head of navigation (I would put your bows to the right, and then gently back into the drain). Try to avoid the sizeable shoal on the inside of the bend (I ran aground).