Fast Catch Boomerangs

This event is similar to the Endurance event, except there is no allotted time. The thrower must successfully throw and catch his/her boomerang 5 times as quickly as possible. Again, each throw must go at least 20 meters to be counted.

Watch the video below:

MTA (Maximum Time Aloft Boomerangs)

As suggested by the name, the MTA event is scored based on how long the boomerang remains in the air. The score for each round is based on one throw, and although throwers attempt to throw as far as possible, the boomerang again must fly at least 20 meters to be scored. Boomerangs for this event are very specialized and can be recognized by their distinct small shape.
Watch the video below:

Australian Round Boomerangs

Points are scored in the Aussie Round event based on accuracy, distance, and catchability. The thrower again stands in the center of the bullseye and throws the boomerang towards the outer circle. The boomerang must fly at least 20 meters, but in this event the thrower is awarded additional points when the boomerang goes further than 20 meters.

Boomerang Throwing Accuracy

As the name of the event implies, the accuracy event is used to measure how accurate the thrower can toss the boomerang. The thrower stands in the center of a bullseye, painted on the ground, and throws the boomerang towards the outer circle. Points are scored based on how close the boomerang lands to the center of the circle. In essence, the thrower is trying to get the boomerang to come back to the point where he/she is standing.

Twisting the Arms of you Boomerang

Twisting the arms of your boomerang, either clockwise or counter-clockwise, alters the angle of attack, which is the angle at which the leading-edge cuts through the oncoming air-flow. Twisting the arm counter-clockwise will add positive angle of attack to the wing, whereas twisting clockwise adds negative angle of attack. Tuning your boomerang by twisting is used to adjust: spin-rate and wind stability, distance, lie-down, and the type of trajectory.

Trick Catch Boomerangs

The Trick Catch event consists of two rounds, a single throw and a double throw. Throwers first attempt the sequence required for one boomerang. Sequences can vary between competitions, but examples of the types of single trick catch can include: behind-the-back, under-the-leg, hackey catch, single hand behind the back, a foot catch, and others. After all throwers have attempted the sequence of the single catch round, the doubling round begins.

Modifying the Weight of your Boomerang

Adding weight to a boomerang is generally done to increase momentum, which results in a longer distance and greater wind stability. The easiest way to add weights to your boomerang is to tape coins, or small pieces of lead to the bottom of the wing(s). The following rules of thumb should be taken into consideration when trying to modify the weight of your boomerang:

Boomerang Throwing Endurance

The Endurance event is a five minute timed event. The thrower attempts to throw and catch his boomerang as many times as possible in the five minute time allotment. The score is determined by how many successful catches the thrower can make. Each throw must fly further than 20 meters to be eligible for a point.

Watch the video below:

Modifications

Tuning boomerangs is used to modify the way a boomerang performs or to increase its flight range. When you are changing the characteristics of your boomerang remember that SMALL modifications can produce HUGE changes in the performance. Remember that each time you make a change to your boomerang the flight can be significantly different. The easiest way to tune your boomerang so that it flies how you want it to, is to make one small modification at a time, then test throw your boomerang to see how the flight changes.

Bending your Boomerang

When you bend the arms of your boomerang either up or downwards, you are adjusting the dihedral, which is the angle above or below the straight/neutral position. In general, bending the arms will modify the distance, hover, and trajectory of your boomerang. Remember even a few degress in change will alter the flight of your boomerang significantly.