I am gonna break down and buy a good set of flags for my 600 yard home range,,out to about 175 and from 450 to 600 is pretty flat but between 175 and 450 is maybe 20-25 ft low,,I work in aluminum extrusion and can get poles long enough to raise the flags to my sight line no problem,,my question is how many are most of you serious match shooters using,,ever 100 yards,,50 yards?? I figure the more the better but not sure how many you can actually keep track of,,evenly spaced how many,,,6,8,10,12