This is the setup I have been using to start all my glow engines. I can't take any credit for the idea or the design. I saw a photo of this setup in a Model Aviation magazine from the 1980's and basically copied it.
With the field box on the ground, I simply grab my airplane and push the spinner into the starter. After the engine starts, pull the aircraft back and the starter stops.
Hands are always behind the prop arc, no reaching around to remove the glow starter, or adjust the high speed needle.
Haven't had a prop strike to date, and feel this setup is the main reason.
I also have a photo of a model engine with a circular sawblade on it, attached to the back of the field box. Think it came out of the same Model Aviation magazine. Just a not so subtle reminder to be always alert around a running engine.
Jim