So the first graph I did was complete rubbish. I did another couple graphs and then some swatches. After much frogging, I think I have what I was looking for.
It needs to be blocked but it gives me the salt covered rocky feel I was looking for with the randomly wavy edge. I created it using several short rows similar to the small sock heels I talked about the other day. I think I will keep knitting the scarf body and end it with just some garter stitch rows. The end seems a little too frilly to have two of them on a scarf. Plus the straight edge on the other end is reminiscent of the Salt Flats that seem to just go on and on. They say the Salt Flats are so flat you can see the curvature of the earth.
Now the problem is to remember what I did so I can write a pattern.
By the way, the yarn I am using is Classic Elite Alpaca. You can view my progress on the scarf on my Ravelry page.