While I was hiding this cache, I heard banjos playing in the hills. Be real quiet, and you will also. You're looking for a bison tube.
This CR (Courtois River) series was developed for the adventurous floating geocacher in all of us. The Courtois River, pronounced locally, Coort-a-way, is an Ozark clearwater gem just 90 minutes from the St. Louis area. It is quite safe at normal levels and the area is abundant with canoe, kayak and raft liveries (see related web page for more information about the river).
If you have your own watercraft there are several shuttle services for your vehicle for a very reasonable cost. The series starts just below the Butts Road low-water bridge and ends 6.1 miles downstream at Scotia Bridge where Highway E crosses the Huzzah River. The Riverfront Times cited the Courtois as the best local float. The cache owners have taken great care to make this a memorable series. Approximate float time with caching is about 5 hours. Black belt cachers could do it in 3.