Riders come in all sizes, Jetblades are designed for each rider to be able to find their optimum width for comfort and stability, not too wide, not too narrow, just right! Riders as young as 9 years old can fly with careful parental supervision. (For riders under 18, parental supervision and acknowledgement of the riders physical limitations and the risks of hydroflight over open water is paramount! Use proper judgement and take advantage of proper training and safety equipment.)
Stance width is not a fixed formula, outside shoulder width is a good starting point for a freestyle stance. For advanced maneuvers where sideways tweaking in important and knee angles come into play, wider stances can allow more flexibility. For beginners, wider stances can offer a bit more stability as long as not uncomfortably wide, for example, children riding wide stance adult boards. All of this is dependent on the individual riders physical geometry and musculature. Jetblades come with inserts mounted in slotted tracks that allow the user to vary the position and find the optimum comfortable flight position. Advanced versions of the Jetblade such as the Jetblade CX and the Jetblade Scorpion feature customized stance width in any dimension for the advanced rider that has locked in their stance.