Hatches: What to Do About All Those Bubbles

What do you do when the water’s surface is covered with insects and bubbles and you have no idea whether the big trout that are eating themselves silly have taken your fly or not? Simple, says Phil Monahan in this week’s “Fine Lines:” use an indicator fly.
“There are few more maddening situations in fly fishing than watching fish gorge themselves right in front you but being unable to catch them because you can’t see your fly.”