As much as I hate having Draconian measures imposed on me, if the players aren't able to police themselves, then perhaps there needs to be an intervention.
Implement some kind of measurement where they can get up to 5 attempts to start. Anything less than 40%, (2 of 5) they stop taking them. If you are shooting sub 25% on the season, maybe lower it to 3 or 4 attempts.
If they make it out of the preliminary round, if at any point the percentage dips below say 38'ish%, stop.
Failure to follow said rule will mean the player has chosen to remove himself from the game and his a$$ will be on the pine for an extended period of time.
I feel it changes the psychology a bit where a player needs to be more selective to ensure the highest possible make opportunity so they can continue to shoot 3's. It cuts down on jacking shots stupidly and hurriedly and wasting possessions.
I helped coach club teams where I would gather stats and run analytics all by my lonesome. I had to have some hard conversations with kids who were killing the team with their judicious use of the 3 point shot. As in, either start making them, or you stop shooting them. As if by some miracle, they stopped taking stupid 3's, started taking more measured attempts, and their make percentage increased significantly. As a result, we won several games we otherwise probably lose, especially if it was close (10 points or less).
The U has a team of stat trackers. Friggin' use it. Playing time is the only currency a coach has that means anything to the player.
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