Shoulder high to a foot or so overhead. Slower take offs with faster sections down the line. Love cranking up the speed and floating over smaller close out sections. I used to love tucking into close outs, but it seems to hurt a little more now than it used to in my 20's, so now it's up and over
It actually feels like I learn more about how a wave breaks, like where I should and should not be, when I'm comfortable on it.
Doesn't really worry me if it's over reef, rock or sand. Sand can be just as good as a reef, as long as the banks are good.
Variety is the spice of life anyway!!!