Before I had a pop'n KOC I used a IIDX controller for pop'n. As I played one-handed then and scratching isn't good for key 1 and 2, I eventually used L1 and L2 of a small controller or keys 1 and 2.
I also used the pop'n KOC as 2P side in IIDX doubles, but that was pretty bad, as the distance between the centers of the keys is greater, even on a pop'n KOC.
__________________
IIDX Rank: SP 九段 (7/8)/ DP 七段 (5/8); 1P Side player
SP 11* Clears: 132/150 (88.00%); 12* Clears: 22/96 (22.92%)
Has access to CS 9th-EMP+PB+US, uses extended KOCs.
|