When to bring up a blown rule call?

[Bandit]

I go to a lot of softball games that my sister-in-law plays in and while I don't like to see that "know it all" in the stands when I'm umpiring. I try and follow that my simple rule of acting as a fan like I would like fans to act while I'm out on the field. On the other hand I'm not ashamed of the knowledge I have worked hard at obtaining and will also go through the proper channels of letting the umpire may be making a mistake...coach, UIC, park board friend, ect., ect.