if you want to render the image, just use a normal map (or bump map) with blurred black stripes on white background for your material. If you want more detalied effect, and your rendering engine allows it, you can use a displacement map. If you don't want to render the image, you can just make a texture with desired visuals... Trying to model that, will result in lots of polygons and SU might just not be able to handle.

@jim said: @will pittenger said: Randomize TIN looks like it will do the job. It does, however, need more error notifications like "no appropriate selection." Yeah, I'm bad about stuff like that. It does help when someone comments, so thanks for that - I'll look at updating the plugin. I figured it out when I examined the code. Until then, I thought I had to select the contents of the group rather than the group itself. Also, read the following: All nodes appear to be either up 1" (what I entered), down 1", or left alone. There don't appear be to be nodes with any other changes. As a result, the surface doesn't look as smooth as it could. I haven't figured out how to do the transition at the bottom. Not only is the stream something other than a simple rect, but at the bottom, I need it to get slightly steeper for a moment. I plan to simulate a screen there that will divert the ball from the stream to a tube leading to the hole. (The stream will look like a ordinary water hazard, but won't be one.) The ball has to go one way and the "water" another. But the ball won't roll uphill. So I want the bottom to be steep enough that the water goes below the screen and yet the ball can still roll downhill. This might telegraph through to the surface.