Before you make that first cast, look at the water and find zones of change
in the texture of the surface. Use those polarized glasses and look
"into" the water and observe the differences in the bottom configuration.
Take a second to observe where the shadows and the sun are in relation to
you. Look for areas of transition in any water that trout exist and you
will locate them. They love change.
Locate a moving foam line in a river and find a "softer" piece of water
adjacent to it, bingo! Trout city. Find a sandy bottom along the inside
bend of a rivers turn, look a little deeper and examine the gravel or rock
lining this edge. Set up your nymphs drift to follow this line and get
ready for a take.
A low hanging sun behind the brush has cast a definitive shadow line across
a slow moving stretch of river. Fish the edge of this shadow, it is a
transition zone, Troutzilla likes this area.