need a drone that I can use when Im flood irrgating my feilds so i know when its at the right spot to change it to the next "check". All my feilds are either planted to alfalfa or wheat so the cover is thick. Im wondering a drone with a good camera will see the ground good enough to find the water or if I need one with thermal to see where the water is at.  I also need it to work in the dark too.   what would you recommend for what might worlk? Iv never used a drone before or know any neighbors that use one for that job. Most of my feilds are less then a half mile long and each "check" is about 300 feet wide if that helps.