Since I have a lousy memory, I've started taking a print out of an aerial of the farm with me when I'm out and about. Got one in the tractor, the truck and each of the mules. When I see something that's going to need attention, poor fence, MFrose, burrdock, whatever, I make a note of the location on the map of where it is. Then when I'm ready to go spray or whatever, I combine the information on all of them and know where I'm headed and what needs to be done. I mark the stuff as sprayed then check back on it in a week or so.
dun
dun