I personally think you just have to drink...know when I was backpacking into the Serria's & into the Rocky's around the Teton's, I was always stopping to drink so I wouldn't get dehydrated. I found that sweating from hiking make there be less fluids to have to pee out....even though I ended up drinking more.....but if you have to go, you have to go & it's just a fact of nature.....which is what you are out enjoying....so just be a natural part of it & if that's what your body needs to do....so be it even if it is a nuisance.