Minelab | 5" GM 05 Skid Plate Coil Cover Gold Monster 2000 | LMS Metal DetectingMinelab 5 Inch GM 05 Skid Plate Coil Cover For Gold Monster 2000 Metal Detectors A search coil cover is also known as a skid plate. Detectorists use it to protect the search coil from scuffs and scratches, which would occur no matter how careful you tried to be. Stones, pieces of metal, and other objects can easily cause damage to the search coil, which is often quite delicate. A coil cover will reduce potential damage while also ensuring it does not