Reaction times are essential on both the pro-tree and full .500-second bracket tree. There's nothing worse than having your competition covered by 2 tenths on the track, only to blow it 'cause you were sleeping when the ambers were flashing.
I came across this very strange Reaction Time Test and blew close to an hour shooting sheep with arrows. My best was a .128-second reaction. Give it a whirl and let me know how you did. Reaction Time Test