Your love of treasure hunting is so fierce you think anyone who shares your DNA should enjoy it too. It doesn’t work like that. Your child might want to have nothing to do with metal detecting right now. It might be something he’ll become interested in later in life, or maybe he’ll never see the appeal.
There are ways to introduce the hobby to him that might give you a better chance of getting him interested.
Focus on What He/She Likes
Is he into adventure movies or stories of pirate treasure? If so, play up that aspect of metal detecting. Stress that metal detecting never yields the same results on any given day.
Go detecting on the beach where you can talk about the possibility of finding pirate’s treasure or coins from shipwrecks. Almost every kid can appreciate the adventure that possibility offers.