The actual page is -

http://home.clear.net.nz/pages/grantglazer/Kayak/HintsSandyRudderPedal.htm

Note that our pedals are "full-foot" pedals, that is they are the size of your foot with the hinge about level with the ankle. If you move your foot you will see that the heel comes back as the toes go forward.

The rudderlines can be set so that there isn't actually any pressure on the line so the rudder sets up in a neutral position (minimum drag) and moving a foot/toe forward kicks in enough rudder to do a course correction.

Alex