Imlay Canyon Gear Sand Trap

The SandTrap, invented by Steve Woodford of Springdale Utah, is a device for creating a retrievable anchor any time you have sand available. 

Fill it with sand, then rap off it. Pull the retrieval line to spill the sand and retrieve the Trap, leaving nothing behind other than displaced sand. Ingenious! The only problem that I see with it is that I didn't invent it!!!