Getting cocky with the power trowel cost me a whole slab

So I had this small slab for a shed pad, just a simple pour. I was flying through it and feeling good, thought I could speed up the finish. I started using the power trowel way earlier than I should have, like right as the bleed water was just leaving. Ended up trapping moisture under the surface. The next day, it was a total mess, man. The surface was all weak and dusty, with ripples and rough spots where the trowel blades dug in. I had to grind it all down and basically start over. It was a real kick in the teeth, but it hammered home that you can't rush the timing, no matter how small the job seems.