Grafham will always turn up a big pike or two, it's the old story of location and pressure [from angling]. Give it a year or two and I am sure you will see Chris Bishop fishing there for Zander as well as in the Fens. The pike at most trout waters soon wise up to angling pressure and move off to quieter places and the odd fish then gets caught you would least expect it. So the Aerator tower is "THE" hotspot, with Savages 2nd, where is 3rd and 4th? Try the pipeline from the Aerator to the Dam tower [not a straight line] and then try the dam. Remember the biggest fish ever from Grafham came from the Dam, 5lb leader size 10 Black Tadpole, weight ???, but having seen the photos, I would guess at least 44lbs!!!!!!!!!!
Something to think about EH??
Colin