take a tip from me if you are planning on taking kids with you when beach detecting take some really big gobstoppers.
some time ago myself and my father were detecting on a local beach with my 2 girls, about 7 & 5 at the time, they were happy playing in the sand, kicking a ball about whilst walking behind us showing no interest really. when my youngest must have ran the length of a football pitch screaming at the top of her voice
"Bampi's just found a huge gold ring !!!!"
looking aroun i noticed that everyone within a good quarter mile radius had decided that perhaps sunbathing wasnt that important , sat up and checked their fingers for any missing family heirlooms.i calmed her down and explained that people were watching and, with a wink, told her to keep this a secret.
an understanding look came over her face , she turned quickly ,and running back to my father, shouted "Bampi, Daddy said dont tell anybody you found a gold ring !!!"
hence the gobstoppers.
p.s. dont use duct tape as you tend to get reported to social services