In the last few years the Isel’s river bed has retreated. This has resulted in a real paradise for pleasure boats. One wave or roll after another occur from the confluence of the Kalserbach to Schlaitner Brücke. From here the Isel is never more than difficulty level WW III+ and even that is only in sections. In Ainet the famed "Aineter Wave" is the crowning finale and has provided hours of fascination for many paddlers.