This opinion was suggested to me by someone I respect and the more I think about it the more I think it might be true:
Cooney needs to stay out of the weight room. Kid is too jacked, His shot, seems hard and mechanical and it appears the more muscle he puts on, the less consistent he's become.
I don't know the physiological aspect of it, but it would seem to me that the constant breaking down and regeneration of muscle tissue would be be counterproductive in honing a skill that's based on muscle memory and precision.
The pure fan in me also is struggling to come up with great shooters who were workout beasts.
On the other hand: Reggie Miller, Larry Bird, Rautins, Gmac (notorious for being allergic to weights), Kevin Durant (mocked in pre-draft workout for lack of strength), JJ Redick...etc. I can up with an unending list of skinny dudes who can flat out stroke it.