I have the predator supreme with the decoy heart. It works well the motion is horizontal. If it begins to lean, it will just barely move.
I have a home made electronic calling box with a car stereo and speakers. On top I have a rubber ducky AM/FM antennae (also used as a ATV stereo). I use duct tape to strap the stick from the decoy heart to the rubber ducky. This adds a little more motion to the decoy. The antennae is strong enough to hold it all up, but allows it to wobble around.
