If you want some easy, cheap and effective topwater flies try a Gartside Gurgler: [url=http://www.warmwaterflyfisher.com/flymonth/FOTM102002.htm:85326]http://www.warmwaterflyfisher.com/flymonth/FOTM102002.htm[/url:85326]
(I sub Estaz for the hackle if I want a little more flash).
Crease Fly is almost as easy: [url=http://www.flyfishsaltwaters.com/Creasefly.htm:85326]http://www.flyfishsaltwaters.com/Creasefly.htm[/url:85326]

Regards,
ScottP