The wool blanket works,& it works real good.It has proven itself for a lot longer than any other fabric including silk!I personally wouldn't wear wool canoeing a fast river,I would have it stowed away for use off of the water & like everything else wool or not,normally you are going to do your best to stay dry,if it's raining you break out the poncho or rainsuit,doesn't take a scholar to figure that out!Many people have frozen to death with wool blankets but the majority of people have survived with the same wool blankets!Many of us are here today because of wool blankets,they definitely will alway's have a place amongst us!