Buyer's agent should know before they show

I recently had one of my listed lake homes shown by a local Lake Oconee agent. This agent had never been to the house before...ever. This agent had no idea what to expect and, not knowing the area, no way of explaining the pros and cons of the home. This lakefront home is near new, in one of the most desirable lake communities, and priced properly for the current market. Feedback from this agent: "Customer didn't like it". This agent is essentially a tour guide...when pressed they will show property, but with no idea of the salient points that may make the property right or wrong for their buyer. I can only imagine what their customer thought...people can tell when their agent is clueless.