Well I don't go quite that high, but I will say that I always put on atminimum 2 more ratchet straps, really I add as many as I need, to get that stand tight and I mean tight against the tree. This serves 2 purposes: safety and quiet. Also I put steps higher than the stand just to make things easier. I like to lean mine back slightly so that it tips you toward the tree too.

You get that thing rock solid, always stay harnessed, and you will get used to it, it will feel like you were hunting from the tailgate of your truck.
I even reached the point where I used to marvel at how nervous I was, now I scramble up there like a billy goat.

Lastly, ladder stands are nice to use, same setup as above I use, only I also use bungy cords to hold the ladder sections together.

Hope this helps, just tricks that I have learned from someone who used to get shaky too. Just my 2 cents.

c_str