You can't base everything on the immediate results. I have done about 25 flushes in about 3 years and if I stopped at flush 2, 3, or 4 I wouldn't be where I am today. The first couple of flushes I got out about 100 stones each time but still felt miserable. The next several flushes were dismal and I still felt miserable.
The flush number 5 was the mother load. I got out about 3oo stones that were of considerable size, several the size of small walnuts. What if I had stopped when the results weren't what I had hoped for or expected?