Ive hit myself a few times.. doesnt hurt, once with the prop into my should, another time I centerpunched myself in the back with my shocky full throttle axi2208/34... Just glad nobody else was there to see it, but probably was hilarious!! I like to hover as close as I can to myself. The foamy aint gonna hurt ya.. if you catch the prop in your open eye maybe.. other than that, doubt it. Now my 41%, I stay a little ways away from that baby!