Well first of all does he know what position he was the best at? If so he should stick with that. But if he doesnt know then he should probably play fullback. It sounds like he can truck kids pretty good. But fumbling may be a problem because the few times a fullback does get the ball and if he fumbles ur pretty much screwed. I had a kid on my team this year and he was really small and could truck kids left and right. U actually have more of an advantage if u are small and big because u can tackle way easier and u can truck people alot. He should work on his ball carrying ability and tryout for Fullback.

Jesus Christ, he must he such a tank. Fullback for sure…. if he can knock over incoming defenders, but he also has to be able to hold on the ball and run up the gut, which is why he may not be able to play fullback. If he always fumbles it, then he could be possibly D-End.