Our club's water isn't very large, though there is an adjacent lake which is much bigger, but we don't use it as anything other than a controlled return to the launch point would mean a lost model. The swans live on the big lake, but spend a lot of time on 'our' pond as people walk there and often feed the swans (and the ducks and geese, if the swans let them).
I'll be there in an hour or so with a different boat (police boat requires more bench time to repair the damage inflicted on Thursday), hopefully the swans will keep themselves to themselves.