It isn't perfect by any means but it is sturdy and should keep the coyotes out from the ducks. Plus when I put the wheels on it Blondie will be able to move it by herself so the ducks can be on fresh grass everyday.
The back is good now, it just was really tight Sunday night and all day Monday. Liniment works wonders for sure, if ever need some , look for the "Bigeloil" brand made by the Bigelow Chemical Company. It is the best there is, and I tried a bunch of them back when I was shoeing horses for a living.