I was wondering what ways are there to lift a dump bed. The truck I use at work (I don't actually own a dump) involves putting the truck in neutral, pulling one knob (pto?), and then pulling another to raise the bed. How does this system work? Also, what other methods are there and how do they function (electric, central hydraulics, etc...)? Finally, what are the advantages of each, which one is considered the best, and what are the prices for each system?