Local shoots usually (around here at least) let you take a range finder, just don't turn in score. We also shortened the "IBO" time limit to 1 minute at the stake. Problem is some folks don't believe in a watch.

I've found the "slow" people are the top guns, they are the "almost" top guns.

Marked yardage is only half the problem. Hitting a spot when you can't see it undoes alot of spotties, but when you get beat up targets or bright orange nocks in the middle of the 10, it does turn into a spot shoot. Bad for nocks!