setting traps will not help the situation... it may even make it more dangerous for those other than cyclists

thumbtacks in Central Park?
http://newyork.cbslocal.com


I exprienced something similar in the woods a few years back
got a double flat
felt it was suspicions
shared this notion with my brother who also would visit these trails


he shortly after got a double flat
he returned to those trails with a MD Police officer who had a metal detector
that officer found a ribbon of tacks set as a trap

I think I may have found reference to my own mention of this!
http://gwadzilla.blogspot.com/search?q=tacks

but not this
http://gwadzilla.blogspot.com/search?q=traps