A wise DRG once told me that nobody should be holding back CDs during the fight specifically for equal concentration. I recently started raiding with a new group and it's certainly a spot where people get hung up. Taking that advice, I don't hold anything back, and I told them that as well. I GK and DFD and while I don't reapply the dots after HP exchange I do try to keep at least disembowel and ct up on both hands before that. What I've been doing after the split/2nd wash away I tag whichever is closer with HT-IDC then elusive jump back towards the middle and 4th IDC the second one, then play it by ear until the swap.. I don't know if that's ideal or not but keeps my dps above 1300 if I don't mess anything up along the way.