I just received a photo from trike pilot Steven Telck (visit his page), also known as ICEMAN (for more than just the fact that he rides an ICE trike), showing a heel sling on a human powered recumbent tadpole tricycle. This is a method for wearing regular human shoes while pedaling for those who choose not to use cycling shoes with binding attachment mechanisms. Steven is also working on manufacturing a prototype pedaling device that provides added benefits of lessening Nerve Compression Syndrome (hotspots), which should prove fascinating – the evolution of the heel sling.
For an assessment of heel slings, read Larry Varney’s BROL article HERE.
If you are going to use regular shoes while on a tricycle, where blood flow is critical, a sling device certainly is preferred over the product called Power Grips, as promoted by Hostel Shoppe in their printed catalogue as “A MUST FOR TRIKE RIDERS!” – Having used Power Grips in 2009 for a trek to Death Valley, I concluded that they severely restrict blood flow in the foot by their compression design, which forces the foot to remain on the pedal. Only use Power Grips for very short around-town rides!