About the reviewer Like river running but greatest love is playboating. Like to do class five Upper Gauleu and Russell Fork at fall release.....but again, like class 3 and 4 playboating rivers better. Test environment Class three and four playboating river levels on Russell Fork, under 200CFS in TwinTip and on the Ocoee. My friend also paddles TwinTip and we spend seven hour days on the Ocoee(Olympic Course and river) and five hour days going thru the Russell Fork Gorge---At above 450CFS it is class Five, below class three? Review First we heat and blow up footwells to accomodate our large feet/and/or builds. We foam out knee areas and form foamy footpads to customize our feet for seven hour comfort. I use TwinTip to do vertical moves on flatwater and playfeatures. My bud uses it to do all the above plus he is cartwheeling and doing vertical 360 degree moves on flat and moving water. He has tried the very latest in rad playboats but nothing has outshone the TwinTip yet(May 2008). He loves Russell Fork at flood for his TwinTip above the Gorge....