just saw a youtube not long ago in which the guy in the video was explaining how to play an impossible to play hi-hat rhythm that was in some song, I forget which song.
The way it was done was to hold two sticks in one hand... one stick over the hi-hat, (normal), then the second forked under the hi-hat... so that the hi-hat was struck on the down as well as the up stroke. I tried it... not hard to do other than keeping both strokes in tempo.. which was NOT easy. - JamesJM