Three minimum. First number is always a guess.

My old roommate did this with movie trivia, would pause the whole thing to check IMDb on every little plot hole. Same energy as the rule lawyer, some people just need the world to confirm they're right before they can move on.

On an 850 sq ft shop pour in Sparks last summer I went bull float first too, and it was the right call. My mud showed up wet and I hit it right after screed, then followed with a magnesium hand float around the edges about 30 minutes later. The low spot near the door is almost always where the chute dumped, so that's no surprise. When the truck shows up stiff I flip it and grab the fresno first, because you need to close the surface before it sets on you. Wet mix gets the bull float, stiff mix gets the fresno. That rule has not failed me yet.