I remember when I got my 6" peacock out of his dwelling... that was a task!
What I did, was coax him into his PVC home, which I had covered all openings but one with a net. I got him in there, and then slowly picked up the end that he just entered into, then pickd it up out of the water. He fell onto the net that was closing off the one side, and I used that net and the PVC to get him into a transporting container. HTH