Compu-Keel offers template kits. Not sure if they have such a kit for the CP-22 - especially since more than 1/2 of the boat sold were wing keels. I had a set of keel templates made using their kit for my previous boat. If Compu-Keel can't help, then you would need to get the NACA foil section that Catalina designed the boat for. I would guess that this information is available if you call Catalina. Armed with that information you can create a set of templates.