Well it’s hard for a RB/ D and O Lineman that plays Offense, defense and special teams to have one single number. You gonna make the kicker change his number too if he has a running back number? Stop being sorry
He can play all of those with 50-79.
If he plays oline he has to have a 50-79 number. That's the rule. That's the only number restriction in HS. Kickers can wear whatever number they want, the number rule doesn't apply to special teams plays, heck a qb can wear 55 a RB can wear 77 and carry the ball 40 times aa game there's no rule against it. Yes, if you want to catch a pass you have to have an eligible number. But the percentage of players that would play Guard and catch a pass is pretty small. If you have that kid, he would have to change his number accordingly.... Another way around the rule if coaches cannot do without him out there is plop a 5th ineligible number on the field out at wide receiver and let an eligible number play Guard. A lot of lineman type kids would love to have a different number, that's evident by the number DLineman on Saturdays wearing 5,6,10, 99 etc. But you can't on the Oline
I don't completely understand the "just let them play" because people say that about all rules. Holding, blind side blocks, facemask... "It wasn't like that back in my day"... Rules are what creates the organization and flow of the game, without them it would be a free for all. It's a rule, follow it.