On Sat, 18 Dec 2010 13:13:08 +0000, fred wrote:

1" of celotex might do the job in which case it could be stuck to the
underside and with a 45deg chamfer around the edge to half depth and
appropriate decorating finish it wouldn't look too obtrusive.

Now that's an idea that could work and it'd be out of harm's way when the
hatch is open.
--
Peter.
The gods will stay away
whilst religions hold sway