A system and method for determining a location of an unloaded unit of agricultural product and locating a desired unit of agricultural product or identifying a candidate unit of agricultural product as a function of sensing system information indicating contact of the unit with the ground or other surface onto which the unit is unloaded, global positioning system or other location system information identifying the contact or related location, and heading information, which information can then be used to discern the unit from others at the location for desired loading.