Here are 3 riverboards which are carved in 3 different ways and shown in detail in 4 views.

Top view

Carved in the shape of a water drop. Very good holding in all circumstances and all water volumes.	Carved especially for women, thiner shape and shorter fins. The position of the elbows is at the centre of the 3 floats, which allows for a good balance.	Carved for a strong fellow, it is larger at the level of the pelvis.

Front view

You can find the spoon shape on both upper and lower side, which is essential to deal with waves with big volumes.	With a rounder shape on the lower side, it allows for more subtlety and pressure.	More stable thanks to its flat bottom, it reacts more quickly to different streams. Works just like ski edges.

Side view

Again, the spoon shape underneath. 5 layers at the level of the fins. Makes it more difficult to roll.	Shorter and only 4 layers for the fins.	The front part is more lifted. Again, the spoon shape in the length. Thiner fins. The overall shape resembles a nutshell.

Rear view

The inside is carved according to the swimmer’s body. The fins are « solid ».	The position of the belly is higher. Beware that the centre of gravity is not too high: waterline level.	More room in the middle, but still fitted so that it adjusts closely to the swimmer’s body.

Conclusions

Here is the conclusion to draw for each type of riverboards:

Solidly-built and very easy to handle, perfect toy for waves!!!

Graceful and stylish as a woman!!!

Harmonious blend of the spoon and the nutshell!!!