It is who he is really. Shooting thus far has not been a strong point.
Were I him, I would spend less time in the weight room (maintain what he has) and all summer with a shooting coach and maybe a speed coach.
It really has nothing to do with shooting, though. I have never seen a player so bad at taking the ball to the hoop. He has no balance, no touch, no maneuverability, and he generally is already falling backwards or off to the side before attempting to shoot the ball. He plays with such strength in all other aspects of his game, but every lay-up he takes looks like a prayer.
Two things he should work on are:
Being more confident/direct in his drives - it's okay if he gets blocked, he will never have the touch of IT, but he has a lot more strength.
Occasionally jumping off of two feet if he needs to - this isn't necessarily the best way to take it to the hoop, but we have all seen him throw down a put-back rebound on occasion. I would rather see that ferociousness than the dainty crap he has been throwing up.
I agree with Roy, I really like Smart and would love to see him take that next step, but it isn't going to happen if he tries to play like somebody he isn't.