This is one of those all round lures, fish it on a floating, intermediate or sinking line at various rates of retrieve and it will still catch, although a clear intermediate or slow sinking line is probably the ideal line for this fly.
The Taddy or Tadpole works superbly even when fished very slowly or even on the drop. The pattern can be tied in a variety of colours, including olive, white, black/green combo, coral, pink and yellow.
NB:- Make sure the tail is at least 2 inches in length