Might you like a witch or gargoyle on your rooftop? Try these weathervanes instead, they weigh less. Prices and sources appear below.
Witch $50 from mailboxixchange
Bats $64.95 from Windandweather
Jack o' Lantern $39.95 from Swen Weathervanes
Single Bat $239 from Weathervanes Only (my personal favorite, as it looks like the one on the Haunted Mansion in Florida. If only I could weld!)
Witch with moon $39.95 from Swen Weathervanes
Guarding gargoyle $150 from capecodweathervanes
Gargoyle with arms around knees $1,795 from westcoastweathervanes