I support your opinion. Once out of the recreational levels of AYSO and YMCA, I fully believe, impaired or not, that players should be on their own. Perhaps he made it to the collegiate level. Would his mother be able to stand out on the field then? Absolutely not. In my opinion, the player will never gain a sense of independence and the ability to play well on his own with his mother constantly doing such things. I've played against deaf players as well as one with a prosthetic leg and not once was a parent of their's out on the field or anything of that nature.