Mack Camel back, makes my back sore. I find a box with the connection points at the bottom of the chimney a lot more stable than a single point at the top like in the picture. Most of the full time dump trailer haulers say to make sure the load is in the center, so a good loader man is a must. Eyes on the gate, it only takes a second to make sure it's open. Watch your back wheels, you can tell when too much weight goes on them, or off them. If you are half way up, and she starts to go, floor it, putting it down won't always stop it, and chances are once the segments start to bend, it won't come down, and the inertia will take her over, gettin the weight off her is your best hope, and if it's stuck up top, she's going anyway. There must be truth to it, because I have only seen 2 upset in my life, and I have done the put her up, not down trick a few times myself.