For 100 yds I'd just put them all out there more less evenly spaced. For 200 yds I'd put one each at 25, 50, 75, and 150 yds. 300 yards is a long distance to cover with 4 flags, but I would probably put one at 25 yds, one at 75 yds, one at 150, and one at 250. If there are places on your range...