This is my first post here and my first ever attempt at mixing concrete and sinking posts! Today I started work on my pergola project. My holes were already dug (thanks to my teenage nephew and his need to earn money) so I spent a lot of time trying my best to get the posts braced straight and plumb. I'm pretty sure I did ok there, but when it got to the concrete mixing, I am not sure I did it very well. The instructions on the bags said to fill the holes 1/3 of the way with water and just dump the bag of concrete into the hole but I had heard that this method doesn't do a great job so I put a tarp in the wheelbarrow and mixed it by hand according to the instructions. The bag said to use 2.5 quarts of water per bag, which didn't seem like a lot, and definitely didn't look like a slurry when it was done, but I put it in the holes anyway. I checked after a few hours and they seemed a little wiggly. Is this normal? Should I give them more time to set up before I say that the job didn't work well? I want some really sturdy posts because I want this to support a hammock, wisteria, and g****vines, and just generally be sturdy and safe with my wild children acting like children do in the back yard.