Hatch Variables

During heavy hatches the fish may hold just below the surface which restricts their vision window. When hatches are sparse fish hold deeper so that they can view a wider area looking for insects and deeper holding fish may see you better. Fish can become less cautious during heavy hatches because they are preoccupied feeding. The longer a hatch persists the less wary the fish becomes. It can be easier to closely approach fish late in a heavy hatch than earlier in the same hatch.