No, it may be a lomcevak .... Waterfall starts and finishes as a tumble, lomcevakj starts with loads of speed and then goes into a power stall type thing ..... to do a lomcevak you need to fly a 45 degree upline and pile both sticks into the top right hand (or left hand ) corners... it should do a few tumbnles before youll need to centralise the sticks, or if you do it high enough, it will go into a knife edge spin by keeping the sticks inthe corners.
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www.3drc.info , also my other site at
www.aeroforce.co.uk may be of interest!