My Gotlands are a mob of hooligans when fuss or food is about, but try and do anything faintly suspicious or out of the ordinary and the distance between you and them increases very swiftly. You've got to be very nonchalant re treatment. We've worked out that if they think you've got your eye on someone else nearby then you can quickly veer off and grab the one you really intended to.
It won't last for long, they're like The Borg, they adapt to our wiley ways.