Doug,

That is roughly my understanding. However, hearing a shot can be used as just cause for searching hundreds of acres in the general area of where the shot originated. Also, I think that GW's can also make the case that just seeing people moving in an area can be just cause for assuming they may be hunting and then checking them out.

There was recently a case in Ohio that seemed to indicate that courts may look less favorably on GW's who enter property without being able to demonstrate that they knew that hunting was going on. But i havent heard any updates on it.