Slot contests....I don't get them.

[Mr. Sandman]

I don't understand the point behind a fishing contest(s) where the focus is to catch the largest fish but not to exceed a certain length. It makes no sense to me.
It brings way too much luck into the contest if you ask me. It is one thing to be able to consistantly land trophy fish but to be able to land fat schoolies? I don't get it. What are the "braggin rights" to winning a contest like this? (besides the check) Someone explain to me what the point is? Beyond not trying to kill a big fish... which is a worthy thing but I would think you could keep anysize fish alive.