To stash: to fully depower a parawing mid-ride, gather its lines and canopy, and pack it into a belt or vest pocket while you keep riding the hydrofoil hands-free on swell energy. The stash is what makes parawing foiling its own sport; in wing foiling, the wing never leaves your hand.
The stash is the maneuver the whole discipline is built around: it is what lets a rider carry a power source and then ride without one. Because the canopy is soft and lineset short, the wing compresses into a belt in a way no inflatable wing can, which is why parawing kit is judged as much on how it packs as on how it flies.
Two details decide whether a stash works. The lines have to end up captured inside the bundle, otherwise they hang out and tangle on the next launch; and the bundle has to be seated so it cannot shake loose in a wipeout. The full sequence, including the double-stage 4A method, is in stashing mid-ride; getting the wing back out is redeploying on water.