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A wide inflatable floating teeter totter for the wee ones. Opposed louvers on the underside cup water only in one direction to provide forward movement, and a joystick control disengages the louvers on one side and the other for steering.
||Sorry 'bout that. I wanted to sketch this one but I'm plumb out of Upload To The Web space and I haven't figured out the Geocities thing yet. The see saw would be crescent shaped and have inverted bowl shaped foot pads which let the kids push upwards against the air pockets. The louvers are just controlled plastic flaps that lay flat along the bottom while teetering but open for the totter... or vice versa.