One caution about hauling lumber that is longer than the truck bed by leaving the tailgate down.
I did this once. Had about thirty carefully selected, straight KD twobys in the PU. Lashed those babies in with lots of rope and trucker's hitches. They weren't going anywhere.
Came to a stoplight and I'm in the left of three lanes. An eighth mile ahead I need to be in the right lane to get on the interstate. No problem, I'll just out drag the other two cars and change lanes. Light goes green and I take off.
In the coefficient of friction v. acceleration contest, acceleration wins and a bunch of twobys start dropping on the street. So I slam on the brakes and scoot what's left of them back into the truck.
Now to make a U-turn I have to go under the interstate to the next light and turn around. As I do I can see in the rearview that some good Samaritans have parked their truck on the side of the road and are dragging the lumber out of the traffic lanes. Whew, I can relax.
When I finally get back to the scene, the "good Samaritans" have loaded my lumber in their truck and left the scene.