Added some structure today to complement the rock piles. I had made them over the winter using 4" drainpipe, 30 gallon poly barrels, and PVC. I also got a few plastic pallets and a bunch of milk crates over the past few months too.
Here is a pallet/milk crate creation. I hope fatheads use it to spawn. It's secured with rebar and poly rope.
I added 2 landscape pipe structures between rock piles. I filled the center with 2" gravel. Not sure if it will do any good. On the right side of the picture there is also a single pallet structure with 2 milk crates.
Here is the poly barrel structure and 3 PVC trees. The poly barrel structure is like a giant version of Bruce Condello's BG condo. It will be in about 10 feet of water and stands 3+ feet tall. I originally made 3 separate structures with 5 barrels each. I decided to put them all together. I haven't secured them to the pond bottom yet. Not sure if they will be in water that is too deep. The PVC trees are in 5 gallon paint buckets which are secured w/ 4' sections of rebar and filled with gravel and some dry sakrete. The picture doesn't show it but there are 2 rock/boulder piles off to the right.
I'll be adding a few more PVC trees and milk crate structure this week.
Thanks for letting me share....