It is always favorable to be a little selective of clients. When you are running a charter out on the ocean it is almost impossible to screen clients. Most set guidelines and for one to be a client you must fit and comply with the request of the skipper. If you don't fit within this range get your own boat and see how long you last.
On the rivers however the same applies but more on a one on one environment. You should have a better understanding of who your client is and what there values are before they get in your boat. Maybe things are changing in that area with the pressures of everyday ecomomic survival but it never was before when I was involved. Basicly if you were not happy with who you fished with you wouldn't. Peole need to understand that it dosen't matter how much you read or hear, the knowledge of a good guide is worth 10 times more.