Middle Water

I had I go in the middle stretch above Grey’s Bridge. I started at 2000 and finished at 2150. It was not a success. Quite a few fish were rising but they were mainly small Grayling. I only saw one decent trout rise. The middle stretch was also dissappointing in the Mayfly season yet when it was electric fished last Autumn there were lots of trout. Where have they all gone?
Jim Chalmers