I don't get to as many parks as I'd like to, and I was just wondering if coaster manufacturers still use the "trick" of double dips on their coasters. You know, like the Jackrabbit at Kennywood. I've always liked the extra bit of air one gets on these elements, and didn't know if they were still being built into coasters.
The Voyage has a triple down so I believe the answer is yes. I would say that the triple down may have been my favorite part of the ride also. But I got to ride it during Holiwood Nights in 2006 and haven't got back to Holiday World since so your view might differ.
Wild One has both a double up (into the turnaround) and double down (exiting the turnaround). Neither are really well-executed. Wild One has been reprofiled several times; the double up used to be a single incline into the turnaround, and the turnaround has since been flattened which made the double down appear more defined, but doesn't feel anything like it used to. Both elements were far more intense (read: incredible) previous to the reprofiling. Check out this comparison:
Don't forget about the Tornado at Stricker's Grove. Technically it may not be an "official" double down as the hill may be smaller then most but it seems as powerful as the Jack Rabbits double down at Kennywood!