I've used Mojo Doves since they were introduced. There are days when they are a dove magnet, and there are days when the birds totally ignore them. Over the years I've found that elevating the Mojo increases it's odds of being an effective decoy. Tied to the pipeline on a center pivot irrigation system with rubber straps is the absolute best place I've found, but sitting atop a 10'-12' tall section of 1" conduit is very good at times, too. There's an insulated power cable that runs along the top of the pivot pipeline that works perfectly to snap the plastic decoys onto.
Here's how I do it on a center pivot. Mojo with some stationary decoys beside it .........