On Tue, 23 May 2006 15:06:44 +0100, Kevin wrote:

Anyone have any experience of them?

We have one in Italy on top of a hill in an area subject to katabatic
winds. Provided that the sail is well made and well secured it shouldn't be
a problem.

http://www.unopiu.co.uk/linee.asp?linea=91&Categoria=12

Page 7-9 of their "umbrellas" PDF catalogue gives examples.

http://www.unopiu.co.uk/catalogo/_en/174-185.pdf

They are now selling in the UK, my wife found a paper catalogue in her last
copy of some house magazine or other.