I have been dipnetting at Chitina only once. We lucked out and had great fishing. I was really struck at how potentially dangerous the situation was, however. The shuttle dropped us at a great spot just above a cliff. In my opinion, it was a recipe for disaster! Steep, slippery, wet rocks; excited fisherman, fast current, cold water, and cliffs that would keep you from getting out immediately if you fell in and pretty much prevent your fishing partner(s) from helping you if you did fall in.
Luckily old dipnetting veterans had told us to bring a long rope, so we tied off and wore life jackets. I shudder to think about anyone fishing a spot like that without being tied off. Sure was a whole lot of fun, though, and provided many good meals.