My oldest son who is 5 has a hard time holding whatever he is writing with, and my youngest son who is 3 has never had problems. Now when I say problems I mean beyond "fisting" (if that is a word) he has a hard time writing his letters and shapes. I researched other sites for inspiration. I did find a couple of things that is working one is to hold a piece of tissue or a penny in his pinky and ring finger which makes him hold his pencil a little better. He still needs to increase strength in his other three fingers. We have been playing with play doh, I have had him rolling a ball and flatting it with fingers and squeezing (like a stress reliever ball) that has helped some. Another thing that is working is to break a pencil or crayon pretty short so he can't "fist" it. What has help most of all is he is attending pre-K 3 days a week. I think seeing the other kids and the constant reminder from the teacher is making him aware. When he starts kindergarten if the issue is still there I may purchase the triangle pencil grips. I think that would help him with his hold too.