We ran it yesterday at the 55 you mentioned, absolutely as low as I would go up there. Beautiful run, but a lot of abuse for the creeker. The in between stuff is pretty bare bones at this level, then again I am not the greatest at rock dodging. You probably know the run better than me and know what your lowest tolerable limit is but I think 55 is definitely mine. The Poudre took a big dip yesterday, not sure how that correlates on the Little South but it looks as if it might be on its way down. Hope it holds for ya.