WEIGHTS

Adding weights to your rang is another way to change the characteristics. You can use coins of different sizes or pieces of lead, which you can tape on to the underside of your boomerang.
Weights are mainly used to
a) increase distance
b) increase wind-stability

Lead weight-taped to the underside of the wing	Lead weight-inserted into the wing

RULES OF THUMB:
- the closer to the tip of one arm you place the weight, the stronger the effect will be.
- adding one weight of equal size to each wing will result in a longer, slightly more elliptical trajectory ( to adjust, use more tilt and throw a bit more into the wind )
- adding one weight of equal size to each wing and a third one to the elbow-section will result in a similar flight as unweighted, only with more distance ( adjust by using a bit more tilt )
- adding one weight to the lead-wing will result in more distance and delayed lie-down and will reduce, if not eliminate hover ( adjust by adding tilt to the throw and aiming lower and more into the wind
- adding one weight to the dingle-wing will result in a higher flight-path, increased hover and reduced distance due to earlier lie-down ( adjust be throwing higher and more vertically)

EXAMPLES:
1. wind-stability: to add wind-stability without adding distance place a weight on the lead-wing, about halfways between the elbow and the tip. This will keep your boom lower and reduce hover and thus keep the it from getting blown away . If you want wind-stability WITH hover for catching-events, try just one weight on the dingle-arm at the same position.
2. wind-stability and distance: for Australian Round for example, when it gets windier and you need those extra yards and also need some stability, try one weight on the dingle-arm, halfways between elbw and tip, and a second one, this one a bit bigger, on the lead-wing, further down towards the tip.
3. distance: for maximum distance only, I use one heavier weight near the ttip of the lead-wing. Adjust by throwing more tilted and lower. If you don't get the boom to return completely, try and add a second weight ( 30-50% of the first one ) on the dingle-arm, near the elbow area. This helps to give the rang back some lie-down again.

You see, there are so may different factors that you can combine and play around with - it basically is a lot of trial-and-error-experimenting. But, the more you try, the easier it will get for you, when you learn by EXPERIENCE how a certain technique affects your boomerang's flight pattern.

If you need any further help, specially with tuning and adjusting your long-distance-booms, send an e-mail, and I'll be happy to share some of my experiences with you.