Ahh yes....The revolving prop thread. I didn't learn till I got bit by a .46 LA. IT HURTS! (I can't imagine what a DA 100 would do).

Whatever safe practice you use. (There are many). Use it consistently. I have seen guys do the STUPIDEST things to get bitten. From pointing THROUGH THE PROP at a loose muffler to just plain not giving it enough respect. Most of the prop injuries happen, as stated, with a running engine. They nearly disappear at full throttle, so be careful and have fun!