Maybe a few fake rubber snakes glued to the roof? Lower profile than fake owls when driving down the road. Of course then the mongooses, hawks, road runners, and eagles will go after the snakes and make even bigger holes.
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Joe and Debbie, Emma the Aussie Cattle Dog who adopted us
2012 Discovery 36J, Blue Ox and Air Force One, 2010 GMC Acadia Toad
USAF (Ret) WDØM
https://wd0m.com