I have used the PFT one for finishing OCR. I sprayed it on, ruled it off straight away, went over it with a 600mm angled spatula to fill any hollows and shave any lumps, then i left it firm up. the labourer then went over it with the power float with a blue sponge attachment giving it a bit of water here and there. This did the work of a plastic float. I then finished behind it with a fine sponge by hand.
It was a better job and quicker.
