Mazza
If it's a beginner's guide, you may want to put the standing jetty start & sliding dock start into a different section
Also, on the jump start, you may want to point out that it's a jump forwards. The number of times I've seen people stack it at the cable by just jumping straight up 8O You're right about the timing. A lot of it is knowing the driver, and how he will power up when you call it.
Also, on the deep water start, when I was shown it, it was arms locked out straight, so the energy from the boat starts to rotate you up & over the board as it starts planing. If your arms are bent, there is a chance that they will get pulled out straight by the boat, and if this happens, the boat has usually picked up so much speed that the handle may get ripped out of your hands.
Just my twopennerth, and I'm prepared to be shot down - but when I first tried deep water starts, I had arms bent (like on the cable) - couldn't get up. Once I was told to keep my arms straight, got up no problem.