True, True, and True.... Most important is safety and knowing every inch of the location you are fishing. I will "never" venture to a location at night that I have not scouted in the daylight. Along with the surf and rocks, this is the type of fishing that I do most of the time. There ARE many hazards as have been mentioned. Cracks, holes, loose ledges, and crack *** mud. You could be walking along, nowhere near the edge, or on the edge, seemingly solid ground and step into an invisible pothole (they are everywhere). Could be mud.... could be a hollow connected to the edge of the bank several feet or yards away. Depending on how fast you are walking a broken leg an absolute possibility, or a broken rod or a ........... Well you get the idea. It realy can be quite dangerous. For those who havn't done it and plan to, scout it out and tread lightly. And never run.
Oh, and stealth will help your chances of catching tremendously. Vibrations are transmitted through the mud to the water and any fish that are hanging on the bank under a ledge will spook. So SSSSSSHHHHHHHHHHH.......