I've had two wood knocks, footprints, and two visual red-eyeshine incidents all within a mile of this one area I go. The one eyeshine incident was one where it moved all over the place to try and avoid my flashlight. If I had a thermal at the time, it would have been a good enough visual for me. But I didn't.
I will continue in that area and am currently deciding which thermal unit to buy. It is an area you must backpack into, with limited access in three directions, so human intervention is minimal.
I want a visual. Nothing else will suffice.