You need both speed and spin and getting spin is a matter of holding on to the disc long enough and stopping the wrist. Actually trying to stop the wrist, because nobody probably has enough power to do a full stop at full power before the disc has pivoted and ripped out of the finger pinch. A 4.30 to 5 o'clock rip point is the goal, when the front of the disc is at 12 o'clock at the rip.
Spin rate increases with increased speed up to a point. That point of not being able to hold on to a disc as long as at slower speed varies from person to person. I don't recall off the top of my head, how much ErinH here spun his discs until the discs gained more speed than spin. He got something sicknasty like 30 revolutions per second tops and it was under max speed i think. I also don't recall the amount of lost spin vs top speed.
Avery Jenkins got either 19.4 or 19.7 revs per second with a pulled power throw in the two slo mo angle video at channel mfranssila on Youtube. The field is only a little longer than 500' and the disc with the dark color bar is a max weight Star Xcaliber.
My best radar shot this season is 94 kilometers per hour and s-curves with fast discs at sea level top out at around 415-420' in calm weather. Of course there's more distance on those shots from skips, but that is the airborne part. Nukes. I did not have the time to measure my spin rate this year. Last year i had a little less power and topped at 17 revs per second, but usually got only 14.
94 KPH of mine falls well under those choronograph limits. Carlsen measured a 600' Teebird thrower having a launch speed of almost exactly 100' per second so good luck trying to throw so fast
Flat shots need running on the center line of the tee and planting each step on the center line. Anhyzer needs running from rear right to front left with the plant step hitting the ground to the left of the line you're running on. Hyzer is the mirror of that.