RE: Engine running Backwards?
I've seen a glow engine start without the battery attached. I have had them start (one time) when the battery is attached, before flipping. So I hold the prop firmly while I attach the battery. If you are going to hold the prop, assume the engine is going to fire and have a good firm hold. Probably it won't fire, but better sort of safe than really sorry. I do the turn over for the bump. then flip forward. If it is a hard bump, as in flooded, then I hit the prop backwards. I recommend a good leather glove if hand starting. . A piece of radiator hose makes a good chicken stick.