"The Fit Kit™ is a special process for finding your position on the bike. The riders I have seen who have determined their cleat position with the Fit Kit™ have always had a very good cleat position."

"Greg LeMond's Complete Book of Bicycling"
by Greg LeMond and Kent Gordis

"To prevent knee injury, cleats should be adjusted so that the angle of your foot on the pedal is natural. To visualize this, think of your footprints when you walk from a pool - some people's feet angle outward, while others are pigeon-toed. The Rotational Adjustment Device™ (RAD), which is part of the Fit Kit™ bicycle sizing system used by some shops, can help transfer your natural foot position to the bike."

"Training for Fitness and Endurance"
by the Editors of Bicycling Magazine

"... on pedal systems featuring rotational movement or float, proper alignment is crucial. Get your cleat position checked by a cycling coach or at a bike shop that uses the Fit Kit's Rotational Adjustment Device™."

"Complete Book of Road Cycling Skills"
by Ed Pavelka and the Editors of Bicycling Magazine

"To avoid knee pain later on, your cleats should be adjusted so that your foot rests on the pedal naturally. Experienced cyclists have their cleats set with a Rotational Adjustment Device™ (RAD) at their local bicycle shops."

"Serious Cycling "
by Edmund R. Burke, PhD - University of Colorado

"The cleat can be adjusted in three ways. The best method is to use a Rotational Adjustment Device™ (RAD) pedal (Fit Kit Systems, Inc., Billings, Montana) while the cyclist is riding the bicycle on a wind-load simulator. The RAD™ pedal, developed by William Ferral of the New England Cycling Academy, sets the cleat in a position with no abnormal rotational force on the lower extremity. The RAD™ pedal is sensitive to transverse-plane force and can indicate to the cyclist when the cleat position minimizes rotational forces. When watching the RAD™ device in use, one can observe the amount of 'normal' lower-extremity rotation that occurs with each pedal cycle."

"The Biomechanics, Etiology, and Treatment of Cycling Injuries"
by William H. Sanner, DPM and William D. O'Halloran, DPM
Journal of the American Podiatric Medical Association
Volume 90, Number 7, July/August 2000