Sprkplug, do you have some cavities in your pond such as old tractor tires or round concrete culverts for the CC do reproduce?
Up to this point I have never provided artificial nesting structures for my CC. Their numbers are low, which suits my purpose just fine.
However, just recently I have decided to utilize my smallest pond as a CC fishery, as my two boys love to catch them. I stocked 25 6-8" cats a couple months ago, so I may experiment with trying to provide suitable structure for them. Thanks for the ideas!