thank you Stanski1980-i gather then that most of the pvc is farily deep?-also i gather that most parks have sprinkler systems so should i ask park personell if it is alright to dig, or should i just wait until they leave-man i am so new to this-when i left the park in question, i went to a small beach here in a local park, and there was this guy just staring at me the whole time-felt like going over and asking what the hell is he staring for-but kept my cool and ignored him. when i looked up later, he was gone. is this normal for people to stare-just how popular is this new sport that i have gotten into??-lololol-anyway thx for the response-oh by the way i found two nails at this beach-the metal detector that i am using is a bounty hunter quick silver-two nails-its a start-i guess lol.