David and David:

Sounds like you guys subscribe to the Ray Davis school of turbine support equipment. The first time I saw his setup I thought he had brought a dresser to the field. It took both he and his helper Bob to lift it out of his minivan. His big Avonds F15 sits atop the rig. Here is a pic of at least a portion of his "start cart:"
http://www.usamt.com/gallery_ray_davis.html

By the way, if you want to take a gander at something amusing, check out AMT Usa's site at the "Eliminator." It's a portable air compressor for starting turbines. You too can own this wonderful device for the mere sum of $650! Hmmm, I think a scuba/pony tank combo might still be preferable -- or of course we could all take the electric motor approach like some of you guys.

Antony