I’ve been watching YouTube videos of great shooters, trying to analyze what they’re doing so I can try to do what they’re doing. One thing that (I think) I’ve noticed is that when they are shooting, they are very consistent in how high they throw the boule.
Almost every player that I’ve watched throws his boule so that, at the top of its trajectory, it is about head-height. If a player is shooting at a longer distance (say, 10 meters) then he throws a little higher, so the boule goes a foot or two above his head.
This suggests that the great shooters are pretty consistent in the force (or speed) with which they throw the boule. And that means their form is probably pretty consistent — the height of the backswing, the speed of the throwing arm, and so forth.
The difference between shooting at a short distance and shooting at a long distance is therefore the height to which they throw the boule. For a short throw, the boule is released fairly early and follows a lower trajectory — about shoulder height at the highest point. For a longer throw, the boule is released later and follows a higher trajectory — above the player’s head, perhaps, at its highest point. In both cases the path of the boule has the same shape — a gentle arcing curve.
Thinking this over, I realized that I was wildly inconsistent in the height to which I was throwing, and that I should try to be more consistent.
On my practice area I rigged up a frame half way between the circle and the target boules. From the frame I stretched two flexible tapes. The tapes are wide enough to be visible, and loose enough to slip out of the way if I hit one of them. One of the tapes is at about head height and the other is about 18″ higher. With this apparatus in place, sometimes I practiced with the goal of throwing my boule between the two tapes on its way to the head. Sometimes I practiced with the goal of simply getting the boule between the two tapes.
I’ve been doing this for a while, and it seems to be helping.
In the process, I found something that surprises me. After I practice shooting for a while (usually with a low percentage of success), I switch from aiming for the target boules to aiming just to get between the tapes. When I do this, my percentage of success (in hitting the target boules) is often higher than it was when I was aiming at the boules! I’ve noticed this several times, so I think the phenomenon is real. But I have no idea about how to explain it.