Here's another option for you. This was an old Samsonite and I purchased wheels and a steel rod etc. and a few other goodies and now have this case which can go just about anywhere. Tires are inflatable, not solid.



This is the same with my 12x20 enclosed..............



I have since purchased a nicer case from Calumet and installed the same wheels etc. but the case is similar to the Pelican, just cheaper and much more protective. You might look into Pelican, Storm, or the Calumet case in a smaller size for 11x14. Even if the smaller models don't come with wheels, any of the hard Pelican-type cases will accept the wheels, rod, aluminum tubing (which is riveted onto the bottom of the case). The larger ones have the pull-out handle built in, as most of the smaller ones do not. With the Samsonite, it was a breeze to take the camera, 5 holders, several lenses, and put the tripod on top behind the handle, and the tires absorb most annoying rocky terrain.

Bottom view.........




Tav