I told myself i wouldn't do this...well here goes. I really think it depends on the the relationship between the wrestler and the parent/coach. Some parent/coach relationshiop with the wrestler goes like this. You win your amazing and everything is great...you lose you wreck your entire family, Dad/coach yells at me at the top of his lungs, i tried my guts out and all i get is a shrug or "you should of worked harder", and on and on. On the other hand, some parent/coaches love the wrestler no matter what. win or lose you get a hug and a high five and told that you are an awesome wrestler no matter what.
guess it would really depend if coaching your kid was right if you were qualified to be a parent first.