I agree and feel the same way. I think these spots just warrant a trip to confirm what you remember or are seeing on the topo map. I was recently looking at Google Earth for the property we hunt. I saw something I never noticed before...even though I have seen this area on topo maps and hiked it several times. A bridge of trees that goes right through a swamp. This HAS to be a funnel. I just want to go there once to see if there is a tree I can put a climber in, see if there is any visibility, etc.... See pic below: