Here is a link I came across while looking for a Panfishing club in Oregon. There is one, it's the Oregon Bass and Panfishing Club. They were recently putting in some crappie structure that is made by Berkley, out of recycled fishing line. Henry Hagg Reservoir is looking good in a year or two if they keep this up. I thought this design would be interesting to the Condo planters here if you hadn't seen it yet.
http://obpc0.tripod.com/id121.html