But then how do I pull off the Boid (Boa, Python) figure I intend to make? The rattlesnake doesn't look anything like a boid, so I don't want to use that (besides, it has permanent rattles) and I have a Red Tail Boa and a Reticulated Python that, with a little soothing, I might be able to get to lay still long enough to be scaned to sample the pattern from (if not there's always the webcam). But, conceivably on a snake, the defaultPick should be the head or the segment 1 or 2 back from it. That rule would prevent assigning a curve to the segments on either side. And a snake body is close to radially symmetrical, but not exactly. Actually, doesn't the P4 horse also violate all of those rules?