It depends on the engine. Most of the time I use a chicken stick (1/2A I prefer my fingers since there is not really any room with a 5" prop for a chicken stick) since most of my engines will start by flip starting, but some (especially my OS .46 AX's) won't flip start. If the engine is difficult I'll resort to the electric starter. I have an old Astro Flight 1/2A starter that I do have to use on a couple of engines since for some reason they just don't like to flip start. At the end of the day when I put the after run oil in the engine I do use the electric starter to help get the oil get into the bearings.

Hogflyer