Yeah, I do free range on the geese. I got them from a dog rescue group on petfinder. I was really clear when asking her if they were predator wary, and telling her there are tons of coyotes where we live and that they would be living on the lake, and the lady said yes, that they live around tons of rescue dogs and that they have made it just fine even with the aggressive dogs around. She said that all she asked of me was that I not eat them. I told her not to worry, I would never eat my pet geese.
I feel horrible that we have lost two of the five in just over a year. Both to predation.
I am currently making my second (they would not use the first one, but the turtles love it) floating platform to try to get them to stay in a safe place at night. They will probably not use it either, but this time I am trying to make it a bit different, using pea gravel and quickcrete to give it a gravel floor feeling (then I will add some dirt to the top to make it feel a lot more like land). I figure that when the husband did the last one, it probably set too high off the water, and also it was just too open. This one will feel much like a piece of floating land when I am done with it, and I will tie it off in the area where they like to hang around, keeping it secured out there in the water. Not sure it will work, but it is worth a try.
I have added outdoor lighting that keeps the lake a bit brighter at night, so they can at least hopefully see what is lurking out there in the wooded area.
Guns so far have not been very effective, (can't see them hiding in the thick brush to get a good clean shot) but everyone in our home are great with firearms, even my daughter who I started taking to the range with me when she was just around ten. Actually her high school sport was marksmanship! So we girls are pretty prepared if the hubby is at work. The only thing we have seen that needed removing so far was a copperhead on our trail.
I think the next thing to maybe try to add is the gunia's maybe they will be loud enough to scare stuff off. Having said that, I am going to be heartbroken if they become just food for hawks and owls.
I wish there was something I could use that I knew would keep the geese more safe. I thought about adding a fence with a coyote roller
http://www.a1steelfence.com/coyote-rollers.html
but then I know I will be keeping the other wildlife from having access to the lake, so that does not seem ideal either.
It seems it is just a loosing battle, and I have not figured out a way to beat the odds of loosing pets yet.