Great product.  I have a larger 6.5' bed with wheel wells.  It does make a mess around the wheel wells trying to unload, but the mess is far easier that unloading by hand.  It's also a little hokey to install on the tailgate, but again, it works well and saves a lot of hassle than doing it by hand.  I bought the mat with this as well and the system works great.  I think I have moved a max of 2500 lbs and I barely felt the load.