One of the guys at our field uses a regular type Sullivan starter with a belt drive reduction setup, I assume it's the Miller but couldn't say for sure. It only has one handle on it, but he holds it with that handle and motor when he uses it. He's built himself a nifty little wood box that looks sort of like a toolbox tray with a single handle on the top to carry it. It has two of the small 12 volt computer/alarm type backup batteries like you find in the LHS's, in it and they are hard wired to banana plug outlets on the outside of the box.

This allows him to run a couple of field chargers at the same time, or he uses 24 volts on the starter for the first start of the day on a DA-100. It spins that DA without problem but you will need someone to hold the plane for you as it takes a pretty good push toward the spinner with the starter cone or it will slip.