Smoalking in the tub is awesome.. I don't mean going for a full on breakthrough people, I have never tried that in a bath or shower but having a couple hits of Changa is great. Just enough to feel the power but not quite jump right in. As for the sound of rain and water being too loud. I live in a city full of traffic and other loud noises 24 hours. To trip I pretty much always listen to a meditation track with rain and theta sound waves. When I can get out of town and trip I always try to find a spot right next to a lake, ocean, river, creek etc.. I love the sound and energy of water near me when I'm tripping.