A lot have them & it makes detecting & digging a problem, I have started using this idea, find the target your going to dig, push in a white golf tee,can have barrier tape on it, go find another target, keep going until your sick of this. Supercheap, Repco etc have small fold-able Plastic(no metal) footstools about 8-10" high, sit down & dig targets, the other part to this harebrained scheme is to have a spare coil that can plug into your detector which is not attached to the unit so your not bending & straining lifting a GPX 5000 out of the way when the pick is in action(or pulling on headsets), just the coil or maybe another lighter detector broken down, your also not bending over to dig targets(beer could also be involved) once you have unearthed your 1oz nugget pick up the kit & caboodle & move to the next target. Will be interested to hear your thoughts on the second coil idea as I have an ExTerra 700, SDC & GPX to play with.