I had a season ticket on Trinford this year, but only fished it about 6 times, last time in about June.

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The two guys that ran it were very friendly, and the few times I went in the evenings I usually had the lake to myself. I caught fish every time I went but it never offered me the dry fly fishing I was craving, although in fairness I probably never gave it enough time.
To be honest I found the lake too small, but if you want a bit of sport in Herts (where there's little choice), then its a well run fishery with some nice fish. I had a fish of around 10lb's on a diawl bach variant that snapped the hook in the net!