Thread the needle: roll your Bump'n'Run to tap-in range

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 3 target zones on the green, called Zone 1, Zone 2, and Zone

Space them about 6 feet (2 meters) apart in a straight line.

Place your ball at the same spot on the fairway for every shot.

Hit 36 bump-and-run shots, with 12 shots aimed at each zone.

Hit 12 shots aiming for Zone

Hit 12 shots aiming for Zone

Hit 12 shots aiming for Zone

Each ball that stops inside the correct zone counts as a success.

When all shots are done, count how many were successful and enter your total number of successful shots out of 36 attempts.

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.

Divide 36 golf balls into 3 groups of 12 balls. Put each group in the rough near the green.

On the green, mark 3 target zones about 15 feet from the rough.

Hit bump-and-run shots, aiming for each of the 3 zones in order. Hit 12 shots at zone 1, 12 at zone 2, and 12 at zone

Each ball that lands and stops inside its target zone counts as a success.

Keep your stance and ball position the same for every shot.

After all 36 shots, count how many landed in the correct zones and enter the total score out of 36 in the app.