I guess so! What a lesson from you guys, my friend said he was in the water and a girl with a shaved head from cancer treatment swam over to him and wanted to know what he was doing ? He took the time to show her while her daddy watched nodding in approval , and after they were done she left holding the treasures he gave her , how precious! One time l could not get rid of a small boy who seen me find a quarter l told his mother not to let him follow me into the water she stopped him but hours later when l stepped out of the water he and a bunch of kids with their parents wanted me to show them how it works , so l took a few pull tabs and change buried them and let the boy put the head set on and listen to the sounds then find them with a pin pointer , when it was over l told him to hold his hands out and gave him a pile of tabs change and neat junk , his little eyes were huge , his mom all most crying and l was drained , so l guess certain people at special times is OK , but rarely. Hunting mornings and rainy days and non crowded times would be better Many times I've acted like I don't here someone and just moved on , it does piss me off when people want to ruin such a fun hobby .that really cleans are places we play . johnny rain clouds