Fatboy Versipack would be my solution for that scenario. If you don't prefer those as an option, I'd attach a large utility pouch on the side on my belt and place it inside there.
Lol, sorry I was using my phone and I didn't see your post to well sorry. Also the smallest tank in paintball is the Ninja 13/3000 HPA Tank(http://www.pennpaintball.com/ProductDetails.asp?ProductCode=Ninja+13/3000+HPA), this thing is tiny, also may work well with your needs.pkidd said:Hidden this is not my first post...
The hydrant looks perfect. The fatboy looks to bulky.