Looks like it ought to work good. Might want to put some weight on the top if you have high winds like we do. Or stake it down or something. Might try to transform from a fish condo into a plane if the wind catches it just right.
Yes, they will be anchored in place. There will be eight in all, 96 units for spawning. I left the carpet a little long around the edges to hang in the water to prevent wind lift and will pile some pond bottom on top. Should hold it down enough until it saturates a bit. These ponds are pretty protected from direct gusts, especially the little coves where these will be.
John, cool to see those geese on yours! I had a pair hanging out on my rainbow pond for about a week but they've been gone the past couple days. I wonder if the coyotes, fishers, raccoons, eagles or mink deterred them? Definitely looked to be setting up camp then just were gone.