This happened many years ago, but I wanted to submit it to highlight a concern on the run. There are two very sticky holes above the portage on the S Fork Feather, and you do not want to swim the drop. A boater got stuck in the last hole, swam, and was not able to get into the portage eddy. They swam the portage. They lost both shoes, broke multiple toes, bruised their legs badly enough they worried they were broken and couldn’t walk for multiple weeks without severe pain. Their helmet was ripped off by the force of water. The rivets in the straps failed and tore off. They were ultimately fine, but this is a serious place to swim with serious consequence and hazard. Please only do this run if you have the skill and stamina required.