Here is a Renegade Viper Hoof Boot Video Review and Tutorial from a Customer. 

The Renegade Hoof Boot is manufactured in the United States by Lander Industries Inc. and represents the leading edge of hoof boot technology available today. As a complete substitute for the traditional nailed on iron shoe, the Renegade Hoof Boot offers the horse and owner a safer, more natural, and more comfortable lifestyle. To be used only as needed while on a casual trail ride or competitive endurance race. The Renegade Hoof Boot is easy to use and is a high-performance hoof boot that will take you to the finish line with confidence.

The one that works, Renegade Hoof Boots!