Me too! Added 4 coot to the rig this year, and plan to make another 20 or so out of foam. Jim, I can trace the Herter's coots I have if you would like.
I'll dig up a pattern tonight. I did 36 black cork deeks with two head styles. Pattern was based on a traditional Winnebago style coot made for me by Mike Trudel.
Here you go Jim. I put a one inch mark on each page for scale. Each image will just barely fit on a 8 1/2" x 11" paper. I made my heads two pieces, but one piece with an extra long screw will work too, in that case, make the grain follow the bill.
If you need anything cut out on the band saw let me know. I am in Monroe a few times per month and can drop it off to you. Might cost ya a cup of coffee though!!!!