-- Last Updated: Mar-16-13 11:41 PM EST --
When kayaking strokes are done properly, efficiently,
the person is leaning forward, using those foot pegs.
Legs are pumping, knees are moving up/down up/down.
Leaning way back in a seat "usually" results in arm paddling,
versus the torso rotation with abdominal muscle usage.
Touring
http://youtu.be/lef_ut8n0ms
Thigh support comes into play when waves and current interact
with the boat, i.e. bracing, control, maneuvering