I got sick and tired of using the drop-clutch, I haven't been impressed with the "ease of use" of the Mapex contraption, I abhor that "one foot double bass pedal wonder", so I came up with a much simpler solution. I use another pair of hi-hats on a cymbal stand in a fixed position. Since they are only going to be used in closed position, they don't have to be good hats. I use a pair of ZBT's for this (they're cheap). I so seldom use hi-hat when I play a double kick pattern, that this was the easiest and cheapest solution.
I tend to play the hi-hats a lot and I have several really great hi-hats, so this way once I get into a groove, I don't have to worry about all those damn adjustments, I just move to the "fixed" hats for those times and then it's back to the good hats on the sock pedal.