Thinking about buying a system to put in the bed of the truck that will allow me to unload all my construction tools with out getting up in the truck. Basically its a 4x8 platform that slides on rollers and you can slide the whole load out the back of the truck. It will extend a full 8ft out the back and will support 1200 to 1800 lbs with no problem. sure would save the knees and back. Anyone ever seen one work. need input before I spend the 1700 bucks. thanks.