Yamaha DTXpress/DTXplorer/DTXtreme

Hey guys,
   I was wondering if there is some "trick" to doing a type of double 
time on the high hat.  There is a song by 311, called "Amber" and the 
high hat sounds very different than most songs I've heard.  My friend 
says he hears this high hat beat alot in reggae songs...In order to 
duplicate that, assuming you don't use 2 hands, is there any trick?  
It kinda sounds like tik-kit tik-kit tik-kit..

Right now, I'm pounding(not literally....;)) away on the HH on the 
DTXpressII, but it doesn't sound quite right.  Wondering if it might 
be something you can only do on a real HH?

Thanks!
Jon