.......................  ......Fly Fishing Yellowstone National Park

06/24/09


Fly Fishing Yellowstone - Western Green Drake Duns

When the Green Drakes are hatching, you normally have little trouble getting
the trout to eat the imitations of the large duns. They usually don't escape the
water very fast and provide a good opportunity for the trout to eat them. You
may have heard that the trout can become selective on either the emergers or
duns. I haven't found that to be the case at all. In fact, I have found that they will
usually eat either one, the emerger imitations or the dun, depending on the
opportunity available. Most of the hatches in the park are not huge. They don't
blanket the water. I don't think they ever get so thick the trout can be that
selective. .

I said in the opening of the Green Drake section, that they don't last but a week
or two. I should have said they don't last but a week or two on a large stream. In
any one particular area of a stream, the hatch may only last three or four days.
If it is not heavily overcast, it may only last for an hour or two each day.

I mentioned yesterday in the emerger section that we normally use the trailing  
emerger without applying floatant. I even said you could add weight. I generally
recommend this just prior to the hatch starting. When the hatch is underway,
you may want to add floatant  if you use the trailing shuck emerger. However, I
much prefer our Perfect Fly dun imitation.

Presentation:

Trout will normally take the emergers in the surface skim. You will notice a swirl
that may not even break the surface of the water. You may just see a flash.
When they take the duns they usually break the surface. This helps you spot
the risers in the faster water and pocket water. You don't have the opportunity
to spot risers in fast water very often and be able to fish to individual trout.
When we are fishing the pocket water streams, we use short up and up and
across presentations. We try to make a lot of cast and cover a lot of likely lies
and current seams.

In smooth water, you will usually be able to spot individual trout rising to the
duns. If we are not able to find an individual fish eating the duns, we try to cover
a lot of water with the same procedure we use for the pocket water streams
making short upstream cast. You may want to use a reach cast doing this. In
situations in smooth water where it is almost impossible to get close to the trout
without spooking them, use a down and across presentation to rising trout.

Copyright 2009 James Marsh
Our "Perfect Fly" Western Green Drake Dun