Ever think the problem was how it was used, not the concrete itself? I've seen rapid-set hold in mud if you prep the area right... unlike @grayn22's neighbor who just poured it on wet dirt. Sometimes rushing with the right steps works fine.

Oh yeah, that hits home. Helping my uncle with his brick patio, we dry brushed and just made a dusty mess. His mason neighbor showed us the damp trick and it was like magic, totally changed the finish. I felt silly for not trying it sooner.