Crest Onyx Drop Through Deck The cutouts on the nose and tail allow the trucks to be top-mounted. Top-mounted trucks allow this shape deck to have more stability when riding at speeds that may not be suitable for beginners. The medium concave and low flex allows the rider to maintain control when carving or sliding at higher speeds. Crest This design is the unique Yocaher crest with either a black or burgandy background.