A wave generating apparatus and method is provided in which a controller actuates a plurality of wave generating chambers in sequence using a delay between actuation of each chamber to produce a rideable wave in a pool. The actuation delay period may be a predetermined proportion of the chamber period. The sequence creates a surging motion in the pool that changes the characteristics of the waves to create a considerably hollow barreling wave. The flow of water created by a sequence may resemble a diamond pattern and additional patterns may resemble diamonds linked at the vertices. This pattern effectively reduces the depth of the water between successive waves, which causes them to pitch away from the chambers and create a considerably hollow barrel.