I'm looking for a backpack to carry a Manfrotto 755xb tripod with. Collapsed with the head attached it weighs about 8 pounds and is 29" long. The problem with most bags that seem to be large enough to provide a stable attachment for a tripod this size is that they're oriented towards toting a large DSLR with several large lenses and therefore are far larger (and more expensive) than what I would need for my Canon HG20, external mic, cables, and a spare battery.

What I'm looking for is a bag that's large enough to either contain the tripod, camera, and accessories or one that can contain the camera and accessories and has external attachment points that can hold an 8 pound 29" tripod without it flopping about or being uncomfortable to carry for several hours at a time. A simple tripod only backpack would work as well, since I can carry the camera & accessories in a separate shoulder bag if I have to. If anyone has recommendations please share them.