Thread the gap: precision Bump'n'Runs to a tight pin

Arrange 40 balls into 10 piles of 4 balls each. Place the piles in two parallel lines, 5 to 10 yards apart, with each pile in a line about 2 yards apart.

On the green, mark two target zones: an inner circle with a 6-foot radius and an outer circle with a 15-foot radius.

Hit 36 shots: 18 to the inner circle, 18 to the outer circle.

Hit shots from any pile, switch between piles and lines.

Count a shot as a success if it stops in the target zone.

After 36 shots, add up successful shots and enter score in the app, out of 36 attempts.

Put 36 golf balls into 3 groups of 12 balls. Spread the groups around the green between 1 and 10 yards from the edge and 5 to 30 yards from the hole.

Mark 3 landing zones in a straight line at the edge of the green, each 6 feet (2 meters) apart.

Hit 36 bump-and-run shots: 12 to zone 1, 12 to zone 2, 12 to zone

Use the first set of 12 balls for zone 1, the second set for zone 2, and the last set for zone

Keep ball positions and distances the same for the whole test.

Count each ball that stops inside the target zone as a success.

Add your total successful shots and enter your score in the app out of 36 attempts.

Set up 10 piles of balls in 2 lines, each line 3 yards/meters apart. Piles are 4 yards/meters apart in each line.

Put the piles at distances between 1 and 10 yards/meters from the green, and 5 to 30 yards/meters from the hole.

On the green, make 3 landing zones with sticks or clubs, each zone 6 feet (2 meters) apart in a line.

Do 36 bump-and-run shots, aiming for each landing zone 12 times.

Hit 12 shots at the first zone, then 12 at the second, then 12 at the third. Switch piles as needed.

Count each shot that lands and stays in the correct zone as a success.

Add up successes and enter score in the app out of 36 attempts.

Set up 4 rows of 9 balls each, spaced 1 foot apart. Each row is 3 yards apart.

On the green, use strings or tees to mark 4 circles, each 6 feet wide.

Hit 9 balls at each circle, for a total of 36 shots.

Start at any row. Hit 9 balls at the first circle, then the next 9 at the second, and so on for all circles.

Keep the balls in the same place and aim at the target circle each time.

Count how many balls stop inside each circle after 9 shots.

Add up the number of balls that stopped inside the target circles out of 36, and enter score in the app, out of 36 attempts.