How people show their respect, or lack thereof, seems to me to be counter to what the flag or anthem in part stands for. There are many people, some for religious reasons that will not say the pledge or place their hand over their heart during the anthem; however, to stand out of respect is appropriate even to most of them. I find it far more dangerous to dictate what is, and is not respect for some individuals than the liberty that a few may take. I do think that as long as a person shows respect for those in attendance then we should focus on our own relationship to the flag and anthem as opposed to being concerned about others. I will say on this issue, it does bother me when individuals refuse to uncover their hats, garments and so forth.
All of that said, I kind of wonder about the appropriateness of this discussion on a kids wrestling forum. It may be better suited for the other forums.