B.L.E.'s method is pretty similar to what I do. My starters rarely go to the field. About the only time I bring them is when I bring one of the few engines I have that are known to be difficult to hand start. One example is the 3.5cc K&B rear exhaust engine that I have on my Shrike. It's got an oversized carb and the piston to sleeve fit is still so tight it can stall a starter. As I run it more I can hand start it more often, but sometimes it just needs a starter. None of my sport engines need an electric starter.