Still water is a different situation. The fish has a long time to inspect the fly from very close up with essentially no energy expenditure for additional time spent. Nor does the fish have to constantly adjust it's position to keep the fly in the Snell's window.
To do that in a river would take the fish further a way from it's holding spot, and would require more energy to swim back upstream its "lie". So fish must make quicker decisions in flowing water. Otherwise, they waste energy.
Last edited by Silver Creek; 05-02-2013 at 01:33 AM.
Regards,
Silver
"Discovery consists of seeing what everybody has seen and thinking what nobody has thought"..........Szent-Gyorgy