The booby traps were located across the road from his camp. As you mentioned he hated motorcycles and these traps were aimed at motorcycles. Somebody on foot would have no issue unless they literally ran into them.
The CCC (Orange) trail is just about 4 miles long. The two parts of the trail that run alongside or through areas to be cleared total about 0.18 miles, which is 4.5% of the trail.The soon to be barren Orange Trail ?
No guesses?