The eddy turn is a staple of every solid paddler.  The eddy turn enables us to break down very complex rapids into a series of easier moves.  Eddies also provide a breaking point where we can boat scout, perform a rescue, or even get off the river.  Good eddy turns are characterized by leaning the boat into the eddy, also known as carving.  Think of this move as slicing through the eddy wall into the eddy.  Many novice paddlers start the turn too late and miss the eddy.  Try to catch eddies high, near the top of the eddy.

Here are some good examples from Janey Cowie of Zoar Outdoors:

• The Basic Eddy Turn
• Eddy Turn with a Gliding Draw Stroke