As Bo runs through the woods, his boots change to sneakers.
The car that Joey drives to chase after the Rolls-Royce is a 1972 Ford LTD sedan, but when Bo uses the tow truck to disintegrate the car, it is now a 1971 model.
At the beginning when the Dukes stopped on the dirt road and started talking about their time, the General Lee is missing its front antenna. Later when they pull up to the car dealership, the antenna is there again. It then gone again when they pull up to the farm. This occurs throughout the episode.
Just before the Dukes walk out of the courthouse. Boss Hogg's car passes the General Lee with a white four-door car next to it. It continues to pass around the corner, but pulls up and parks next to the General Lee.
When Bo and Luke are being chased by the dog, after trying to repossess the Rolls Royce, the stunt-men who run and jump the fence have different hair from the real actors. Highly noticeable is Luke's stand-in...because he's wearing a wig with tight little curls and Luke's hair is pretty much straight with a few waves.
When Bo trips the blonde woman, he's hiding behind a tree, but from her perspective, his entire profile would have been visible. He also doesn't trip her. His knee is protruding from behind the tree, but his foot is neatly tucked in. So, she fell on her own. Also, as the camera pans out to reveal Luke, he's standing completely out in the open among tall weeds that were no where near thick enough to hide him from her sight.