The problem with F/H is you move down and then are covered up by people calling on their spot in the waterfall. Can't remember which, but one DXpedition I used F/H and would get a reply, then no RR73. Happened twice. Finally turned off F/H and bam! Got an RR73 in one call.
In short, it was a good idea. But it depends on callers that are educated and follow the plan. Too many are not.