Originally Posted by Minnewaska
My first choice would be a calmer anchorage. Second would probably be lee cloths. Flopper stoppers are for top heavy stinkpotters and where will you put them when you want to go sailing.
I agree that lee cloths are wise but in an anchorage? We use a flopper-stopper routinely, suspended from the end our adjustable length whisker pole (fully retracted) with the pole fixed in place with fore and after guys and supported with the spinnaker pole lift. Our flopper stopper is a rectangular grid of stainless steel rod with a heavy plastic cover that is split between the corners so that, as the grid sinks, the plastic can open up to allow water to pass through but as the grid is raised, the plastic closes down and is supported by the grid, resisting the up-lift. The grid is on a 4-point ss wire bridle suspend with a line that passes through a snatch block attached to the end of the pole so that it's depth can be adjusted as necessary or fully withdrawn from the water so that the rig can be recovered without difficulty. It works very well, and even in fairly heavy conditions we will be relatively stable while boats around us are rolling their guts out.
We have used this equipment on our current boat and on our former boat, a Cal 2-29, to good advantage. In the interest of safety to passers buy, we hang orange streamers at several points along the length of the out-rigger and chem-lites at night. (Photos below).