a friend and i are section hiking from delaware water gap to katahdin beginning mid-may '07. this will be my first time on the trail, with the exception of day hikes through the years. i was going to bring a water filter, but reading all the posts on WB i'm convinced that i should go with aqua mira instead. my question, then: how do you "camel up" at water sources if you have to wait for aqua mira to do its job? thanks a bunch.