The moorings stand around 2.5 ft out of the water when there is nothing pulling on the pennant. We have had reports of the moorings bumping the hulls but we have had no reports of this causing damage. At Cooper the winds and current can cause havoc. As GeorgeC1 and a couple of other have suggested if you have a cat and want to prevent the moorings from hitting the hulls you can tie off in such a way that traps the mooring between the hulls. This also shortens the swing radius which can be beneficial at Cooper.