[Capriole]

I had no idea this would work! What a great idea! I may use this for the morons on Harleys who are thundering through the narrow dirt nature preserve paths near my house, making children and hikers jump into the bushes to avoid being hit.

[null and void]

Burying saw blades where they gun it to go up a hill works too.

It's a long contemplative walk back pushing a heavy bike with shredded tires...

[MediaMole]

1. Harleys are not off road bikes.

2. You will be caught.

3. You will be charged with attempted murder.

[Melas]

I don't believe it for a moment. Even without looking, I'll tell you those are dirt bikes, not Harley's.

[LowOiL]

I may use this for the morons on Harleys who are thundering through the narrow dirt nature preserve paths near my house, making children and hikers jump into the bushes to avoid being hit.

You are probable dealing with 4 wheelers. Illegal hunters like to use my dad's property (400 acres) near a nice river on the mountain. They gain main entrance up a creek bed, so dad put him several boards submerged in the shallow waters with big nails in it. After replacing their wheels a few times, the 4 wheelers finally got the idea. But dad would never put a wire/ect across the path, too dangerous/deadly.