I must say that the fuel belt doesn't move an inch, but it's around my waist, NOT my hips.

For a while I used a small bottle - the kind that you buy to put shampoo in to travel - which was the same size as those (much more expensive) bottles you can buy for gel at sports store, and built a handle with some duct tape. Looked pretty bad but worked pretty well. I held with my hand through the handle as I ran. Worked well, but not enough water for a 90-minute run.