Ok, another question for you pros. If I compact the gravel base on Friday for my patio (things are drying out real nice today), is it basically stable then? Like, if it pours on saturday I won't lose any of my work? I would cover it with a tarp, but keep in mind that this had a few inches of water in it before with our last rain. I am also planning on putting in a bag of portland cement with the first layer of gravel.