Everyone is different. I've tried 3 different back-pack hydration systems ( 1 Vaude and 2 Camel-bak) but all of them chafed my neck and made my shoulders hurt (I've had adhesive capsulitis in both shoulders). Since I like constant sipping, and the ability to keep my hands on the bars while drinking I first tried carrying my water in my handlebar bag, but now I carry a 50 oz bladder in a large fanny-pack that also has room for my jacket and lunch. The hose is attached to my jersey with a retractable name tag holder I got at Staples, so it is never loose. I've also seen people rubber band the hose to the chin strap of their helmet. You can get extra long hoses for camel-baks, I think 44 inches. If your top tube is long enough, some tourists hang a 70 to 100 oz bladder there & use velcro ties to hold the tube in place, run it up the stem then use the positioning tubes to hold the bite valve several inches above the handlebars. On your back is not your only option for a hydration bladder by any means. Experiment with what works best for you.