The soft light of the setting sun creeps across the water. Above the placid reflection, a paddle boarder floats silently. These quiet moments are what Step Into Liquid's instructors hope to give to their pupils. Along the north and south shores of Long Island, they help groups balance atop boards during lessons or tours, which pass by resplendent coastal homes. The personal watercrafts also serve as floating mats for on-water yoga workouts, which call students to stretch their muscles and strengthen their cores.