Horizon yacht charters used to recommend testing a mooring just like your anchor. Back down on it and see if it holds. I don't know If they still recommend this practice.
There are pictures on line where moorings in white bay jvd have failed and the boat ends up on shore.
Testing the mooring is not likely to be effective at white bay when a swell is running.
Last edited by warren460; 08/24/2015 04:27 AM.