From my experiences on Whizzer and through pictures, the spirals are a bit more geometric based; so thats the mark I'm going to try to hit with this. I am going to change it up a bit with a second, taller-than-the-first lift and make it as terrain based as can be with such little speed and height. So far max speed has been about 38-42ish mph, but that sounds about right for a family ride, anyway.
Here's some shots of the layout up until the 2nd lift. Prefabs are temporary, just used as a reference to see how high it is off the ground cuz like Jer said, it blends in pretty well.
I got lazy and imageshack'd it.
Edit: Hold on, Imageshack nipped me in the ass. CC upload now.
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Baby steps, I be taking.