I use both strategies. I have an obvious camera on my porch pointed at my front door. I also have a camera hidden in a bush near the opposite side of the porch.

I use both strategies. I have an obvious camera on my porch pointed at my front door. I also have a camera hidden in a bush near the opposite side of the porch. Any potential troublemaker turning away from the obvious camera gives me a perfect view of their face from the hidden one.