Having a pile of junk in the cab makes it much more difficult to tilt also. In the smaller trucks (NPR, Canter, etc) it is pretty easy for an average guy to tilt by himself. If the cab is full, like it was on a recent road trip, it is MUCH more difficult. On something larger like an FTR or Fuso FM, it is heavy for two guys. I have never used one with a hand pump hydraulic assist, but I imagine that it would be quite slow.
Something along the line of a nitrogen cylinder from a hatchback or wagon, sized appropriately, would be nice to have.