What about having someone mount the foot pedal to the side of the cabinet if you are sitting the machine on a cabinet. They make some very heavy duty velcro in which i think if a small wooden block about 1inch by 7 inches mounted on the side of the machine at knee height, then put heavy duty (industrial type) velcro on the pedal and attach to the wall sitting on the block you could have a knee control. Just a thought and very easy to do.