If you have droop at any stage with clones something has gone wrong and success rate drops.
I agree. If a cut drooped on me at any point i would just throw it out right then. Your medium and climate will effect how you need to get it done.
Oasis cubes are great. I've tried many plugs, cubes, loose media, etc. Oasis cubes are the easiest. After cutting, I just water once around the 6th day, then transplant to a small pot of coco on the 10th day under low lighting, then put it in more intense lighting 4 days later (veg).
2 weeks, 100% success every time for several years.
IMO, the average grower is putting a little too much light on their cuttings. They turn yellow and are weaker than if they were under weaker lighting. I like a dome, with a paper towel laying over it, and a single 2 ft T5 bulb sitting on top of the paper towel. Or, a 4 ft over two domes, in line. A weak, low intensity light is preferred by clones. A strip bulb with paper towel cover is great as the light spreads evenly but is still low intensity.
Like others said... thick stemmed tops, bonzai method. Easily get 8-12 clones per small mother plant.. if you need more keep multiple mothers. The fewer cuts per small plant, the better your clones will be. So, 3 mothers producing 8 cuts each is better than 2 mothers producing 12 each... when space is available. Keeping these bonzai mothers under 2 feet tall is easy.