Minn Kota's Spot-Lock is a GPS-based anchoring system that is designed to keep your boat in a fixed position. It uses GPS coordinates to create a virtual "anchor point" that your boat will stay near. While it is not an actual physical anchor, it can be very accurate in calm conditions. However, in windy or wave conditions, your boat may move around the spot-lock circle, so it is important to keep an eye on it and adjust as necessary.