I know that at least some of you have gone from Lewis Lake to Shoshone Lake. I'm planning on making hiking reservations for this summer, or at least trying for reservations, to the site near the point where the river leaves Shoshone Lake. I am wondering about hiking in a packraft, and on the way out, inflating it and floating instead of hiking. I've heard that the bottom is made of sharp rocks... for those who have been there before, are they the sneaky kind that reach up and impale inflatables? Also, the trail leaves the river at some point to return to the woods--and my car. How visible might a takeout be? I don't even want to think about going on Lewis Lake with my inflatable. Thanks for any information. Pringles