Hi John,
I fished Leven on the 12th June, had a great day fishing buzzers, check out my report in the 'fishing reports' section.
Also check out last months 'Trout and Salmon', the article explains exactly the technique we were using.
The best of the buzzer fishing is probably past now however. During June there was excellent water clarity which made for bumper catches.
The water clarity has reduced through August, and the last I heard, the current best method is fishing traditionals pulled and hung on the bob. Wet flies such as Invicta on the point, Kate McLaren on middle and something full hackled on the bob should work well.
The fish are probably hunting the perch fry at the moment. I may PM you as I really must get another trip on Leven before the season ends.
Cheers,
Steven