Fishing a Skater
"This method involves hitching a small fly behind the head so that it retrieves at an angle to the current creating a wake on the surface. The same effect can also be achieved by boring a hole in the side of a small tube fly. This method is at its best in glides and V's where a strong current begins or ends. Polaroid glasses often enable the angler to see fish following the fly and can lead to some highly intensive and emotional experiences!"
Tip. If you get fish rise to hitch but he doesn't take the fly, try a small single hook fly hitched immediately after the hitch.
Match the hitch with a proper Ahrex hook: