I would take the decathlon view. There are certain baseline levels that every student needs to achieve in every subject and in every developmental domain, and all of those need work, especially the weakest areas.
So yeah, that shotput activity is really awkward, but it's part of the game, and you have to keep working. But by all means, keep on long jumping, if that's your thing. There's still plenty of room for improvement, and doing a favored activity is a nice mental recharge from the grind of working on weaknesses all day.
