>>1098873i remember a period in elementary school of about 3 months where i would hit them 3 days a week. They are very much the #1 thing to hit in SoCal. I've hit at least one a month since I've lived here, usually more depending on season.
I hit 2 last week that plugged their own hole so i was able to ride home, and one the other day that destroyed my night.
Small bits of metal, 1/4 the size of a staple have ruined my day. Pieces of glass are the #3.