Show/hide frames on the fly (no reload)

[lurelure]

Is it possoble to show or hide frames without reloading the ui? I'm trying to make ingame options that work straight away, but i'm having some trouble with this. I've tried

oUF_pet:Hide()

etc, but it only hides for a split second, then appears again. I'm aware i can just avoid spawning it, but then i can't alter visibility on the fly