its extremely difficult to find a park that hasnt been detected already. plenty of parks i've been to sometimes the old geezers would come by and share stories like ? oh we used to do to that park and fill our pockets with merc dimes and silver quarters. and then they ask if i found any silver > (ouch) ! nuthin like rubbing salt in your wounds. its fun when you can do that to somebody else. but i've been surprised sometimes myself. sometimes that somebody missed a spot. and it makes your day. just keep tryin as long as you have the energy. if you want to find gold you have to dig all the pull tabs and pop tops. there is gold to be found. and it helps if you have a good luck charm ? or even god likes you. peace out !