Nose rocker is what prevents the front of the board from going underwater when encountering waves, chop, boat wake, or any other kinds of ripples on the water. All SUP boards have some nose rocker. What varies between boards is the degree and location of the upward curvature.
Moderate nose rocker is found on boards designed for all-around use including flat water, ocean paddling, and various calm water activities that can be done on a SUP board such as yoga and fishing.
High Nose Rocker is a feature of boards designed for particular conditions where additional vertical clearance is needed at the nose. This includes whitewater river running and river surfing, where it is important to channel moving water under the board without submerging the nose of the board.
Low Nose Rocker is typically found on boards designed for racing or long distance touring. This is because the glide of a board increases with the flat length of the board that is in contact with the water. An extreme case of low nose rocker would be zero rocker, a completely flat board profile.
A board with no nose rocker would typically have a displacement hull, which is designed to stay submerged and cut through the water instead of planing over the top of the water. This design feature can increase the glide of the board but results in less stability.
ERS SKYLAKE and V3 boards are designed with a moderate nose rocker for maximum flexibility and use in different water. Our Whitewater series are designed with a high nose rocker and our SKYLAKE GT boards are designed with a low nose rocker.