http://www.iheartmypond.com/links/ideas/pondcover.jpg.

Personally I like this design, over the pipe one, as the pipe might
eventually cut thru the material. As Ralph mentioned, think weight of snow.

Material: Look into shade cloth, durable and comes in wide widths.

One thing I saw in a book or magazine recently regarding keeping our
screening off the water, again as Ralph mentioned, insulation properties
when the snow is on it. Use kiddy blow up pool toys, or capped milk jugs,
or large bouncy balls (the ones with air in them not the hard little ones).
~ jan


~Power to the Porg, Flow On!~