1. Harleys are not off road bikes.
2. You will be caught.
3. You will be charged with attempted murder.
These people are driving great big bikes that say "Harley-Davidson" on them, whether the bikes were intended for off-road use or not.
2. You will be caught.
If I were actually planning to do this I certainly would not be posting on an Internet forum with hundreds of thousands of readers. My original post was a way of expressing frustration that these people were bringing big motorcycles into a posted nature preserve and running people off the paths, and the cops can do nothing since it's in an off-road area. But it's seldom that I actually take the law into my own hands.
3. You will be charged with attempted murder.
Goodness, I thought they would just be harmlessly knocked off their bikes by the plastic, not hurt or killed. They aren't going fast. See how ignorant I am about motorcycles. Thank you for the advice.