Never did run the Pongo in my john boat. We used to fly up it as a route back to the lodge at Lake Aleknagik from the Togiak. Once we flew up it with the lid at about 750 feet and the only way the pilot, Bud Holt, could see was looking straight down at the river out the side window, canyon walls on both sides and no room to turn the plane around, in high winds to boot. That was probably the scardest I've ever been in my life. I thought we were through for sure. The clients in back were fuc%ing hysterical. NOT FUN.