In many parts of the country, lakes are drawn down several feet in the fall and winter to kill off weeds and minimize damage to docks and bulk heads. This offers an excellent opportunity to visually see and document large areas without idling around for hours and hours using side imaging or structure scan.  You can find some of the best structure and spawning areas for the upcoming spring and summer months. Use a GPS, take pictures and/or a video to record as much offshore structure you otherwise would have missed. You can often learn more about a lake in one trip during drawdown than you could in a whole season with your electronics. Use caution, as low water can lead to dangerous boating conditions.