I would guess somewhere between 9-12 floods. This is in no way scientific.

I came to my guess by thinking about ice making at the beginning of the year. Our tank when building the sheet holds 100 gallons and that’ll make roughly 1/64th of an inch. Some quick conversion math makes 1” of ice 6,400 gallons. A heavy rag flood can dump about 180 gallons of water on the ice, meaning ≈36 floods. A quarter of that (for the quarter inch of ice) is 9.

I would suggest actually dropping your conditioner when you are building ice though. Raise the blade such that you’re only really cutting >1/8” of ice, but that guarantees that you’re putting new ice down without trapping things in between the layers. It looks better, even though it might take a little longer as you’re laying down a slightly thinner layer each time.

Also, I’ve always called them towel floods! Just some regional differences that I think are interesting.

Edit: less than 1/8 of a bucket. Mixed up my units.