Sometimes I skim - just for something to do - I can’t say there is any difference in any of the beers, though. So, why do it? Again, just something to do while waiting for the boil.
I skimmed a few batches, didn’t notice a difference in the end. Haven’t done it in a while.
If I was working to perfect a recipe, I’d try brewing it both ways and see which method works best. Meanwhile, I’m still brewing so many different beers that I just don’t see it being worth my time.
This is the one reason I do it, when I remember to or feel like it. Otherwise, I don’t think it makes a difference either. Now skimming the top of the fermenter, I do feel makes a difference. That braunhefe is REALLY bitter stuff. Perhaps it only makes the beer taste smoother sooner, but I feel it makes for a more pleasant and rounder flavor also.
Either way, I would most definitely buy a t-shirt with any of those images on there. I could just see all the people at work asking me who the hell that guy is on my shirt?