Starting Weight?

[de Groot]

I wanna build up strength in my arm so I am going to start using weighted balls.
I have used them before and I think they will really help me out. I was thinking of just buying some nails and putting them in the seams of a ball but was wondering what a good starting weight would be?
As I grow I would put more nails in.
thanks!

 

[Damiansports]

What would be your age and build? I have my DD do long toss after warm ups and move her back until she bonces them in and then move back in until she reaches regulation distance. We do this twice a week between pitching practices.

 

[de Groot]

I am 16 years old, 6ft 2 inches and 150 lbs. I practice a couple feet back from my regular distance every time I pitch, I pitch around 5 ft further.