My general rule is to check the hole/working and remove the rubbish left behind you'd be surprised what they missed underneath the rubbish. Plus i feel that if I remove the rubbish i'm helping clean up the area for future prospecting. I know a spot that has been flogged and on my last trip met a...
I've looked into this one and the guy can't guarantee it works as its being sold for someone else
Plus I'm only really after the control box as I have the rest(batteries, shaft and coils)