A cheap plastic dove deke can be used very effectively if you are near a single, or three phase power line. Many of these dekes have an eyelet on top of the back for a string. Take a fishing reel and tie on the dove. Throw it over the BOTTOM line of a power line (on a single phase line there are two. Top one is hot but the bottom one is a neutral with no power. Same on a three phase line, but three top ones are hot and bottom is a neutral). Reel up all the slack until the deke is tight up against the bottom of the neutral line. Doves will light right beside it and don't seem bothered at all that their "buddy" is under the line that they're perched on top of. Of course, we wouldn't shoot one off the line, but rather as it approaches, or flies away. Trust me, the approach shot is easier than the departing one.
