Finally... a use for all those free CD's
I have seen near where I am, that quite a lot of sail boat owners run a string down the length of the boat a foot or so off the deck and tie on CD's at about 12 inch intervals.
Now they are either particularly well heeled (obviously the bigger the boat the more cd's you can afford), recently and bitterly divorced (i.e. they were the ex-wife's favorite CD's) or have found a use for all those AOL and Freeserve CD's that seem to come with every magazine you buy.
I can't really say whether it truely works, but I haven't seen any birds roosting on them so far!