Have built a power line for 3-4 years the day of the hunt and have had doves land on it, that said I really didn't see a big increase of birds swinging to my robo dove and decoys to make all the work worth it. probably a lot of stuff influences the setup but stopped a few years back. A natural flyway will stay the same year after year, terrain ect stays the same and birds will enter and exit fields the same route year after year, ymmv. have had great shoots in hay fields on a pathway to corn fields miles away.