Steering and controlling all that power. Jet skis and Jetlev pods generate an amazing amount of power, that is the principle that lifts the pilots into the air and makes this sport such a rush. The real trick is making that power easy to handle. The X-Jetpack uses two rows of ball bearings and o-ring seals to control the water pressure. The arms move with no increased resistance when the water pressure comes on, steering is light easy and effortless.
The Florida Jetlev uses flat teflon seals to pivot the arms, this means that when the power is off, the arms move freely, when the massive power comes on, the arms tighten, requiring force to “break” them from one position to steer, this can lead to over steer and corrections, minute, but there and tiring.