I don't acclimate when I fly from Boston to LA...man, their sky is yellow and I can deal with it. Why not fish? I usually just temperature adjust fish and toss them in. I only have softies, but I usually just throw those in. The only reason why I do any acclimation at all on fish is cuz when I just throw them in and they are shocked, they can't defend themselves from the 'tougher' fish and I feel bad.
Haven't had anything die yet from tossing it in...
I am kinda exagerating, I do attempt to acclimate a more expensive fish or a small one I am worried about. Larger fish are more tolerant and I just toss in. I am so impatient though, I just can't wait to put them in the tank.