Just compared hand troweling vs power troweling on a 40 yard slab last month
I had a 40 yard garage floor pour over in Baytown and decided to let the new guy run the power trowel while I did a section by hand. The power trowel section looked flat at first but after it cured there were these shallow low spots you could feel with your foot. My hand troweled section came out dead flat and took a denser finish. Has anyone else seen this on bigger residential pads?
My last 40 yard slab I let my nephew run the power trowel and ended up with a finish that looked like a topographic map... guess I should've charged him for the lesson.