Re: Cooling the boat
It should have come with a batten or a dowel that helps hold the scoop open at the bottom and fits across the hatch but under the deck.. then hoist the 'scoop' on a halyard or a pole lift and orient it to the wind, using tension to keep the dowel tight to the deck.
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)