Where to place HorsePal fly trap?

[cardinale]

Those of you with HorsePal fly traps–how did you decide where to place it? Apparently the flies it catches like it near water. Is a 100-gal watering trough enough water to count as a fly inducement? The other logical place is near the run-in shelter where the horses spend a lot of time. The distance from the run-in to the watering trough is a few hundred feet. .

Any other tips on placement? I understand that it’s pretty easy to move around, but would like to start in the best place, at least on paper.

[trubandloki]

I had a home-made version similar to this.

We placed it near the natural water source that happens to be near my turn out and the horses.