Release angle too low
Javelin released below 30 degrees doesn't rotate forward in flight, lands tail first. Optimal release angle is 32-36 degrees. Drill: standing throws aimed at a 32-36 degree target.
A javelin that lands tail-first is a fault. The rule requires the tip to hit first. A throw that fails the rule is short or even no-marked. Below: the three causes of tail-first landings, and the fix for each, with the form check that catches the cause.
Javelin released below 30 degrees doesn't rotate forward in flight, lands tail first. Optimal release angle is 32-36 degrees. Drill: standing throws aimed at a 32-36 degree target.
Attack angle (the angle the javelin points relative to flight path) should match release angle. If the javelin points up while the release path goes forward, the tail drops in flight.
A clean release imparts no wobble. Sloppy release flips the javelin slightly, which compounds in flight to a tail-first landing. Drill: slow-motion releases with a partner watching the wobble.
Javelin trajectory is the most diagnostic in the throws. Film a throw side-on, AI grades release angle, attack angle, and wobble at release. The cause shows up in one frame.
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