I just finished my version of a Cecil cage, 1 1/2" pvc, 3/4" mesh green plastic fencing and measures 7 1/2'L X 3'H X 3'W. I put pipe framing in the middle for more support and might put a removable divider in the middle.
Total cost was about $110. with some materials left over.
Will be putting in the largest PS's from my pond, and some area lakes, and then transferring them to a RAS in the fall.
I would like to mount a small fish feeder to the plywood hatch and then put a bucket over it to keep the coons out. The "Fish Mate" feeder looks interesting, any suggestions welcome.