you put the big bling in front of the kid you get him to wrestle harder in return makes him better in return hopefully makes the other kids better. you throw out something small and you dont get his best every time.
If it is the "bling" which makes your wrestler work harder, you are doing a very poor job of coaching.
When my children were eight and under they all thought the McPherson Invitational Trophy was great, until each had won one and the "bling" was off.
When my children were ten and under it was the competition which was important and the "bling", with the exception of the USJOC sweatshirt, never entered their mind.
