def a hair pin or bobby pi, only reason I know is my mother was a hair dresser and I used to shoot those metal hair pins all over the house when I was a kid.. they would stick right in the drywall with a strong enough rubber band to launch it!!!
Welcome Wheels! Would love to know something about your technique. Have a good buddy in a chair who took his first deer with a bow a couple of years ago and has also rigged his chair for concealed carry, so I know you can always find a workaround. I just received my Minelab 705. Which machine are you running?
By the way, those fancy spring-loaded bobby pins are great for clamping on your little brother's ears ...