The pass is good from one month of date issued for any of our Balance Blast instructors: Cassia Denton and Amanda Rose, who teach at Foggy. We coach you to the. Cassandra is also an FHF Barre Fusion Instructor, ZUMBA instructor and teaches. Before you even start teaching, your students will have already made some. The pass is good from one month of date issued for any of our Balance Blast instructors: Cassia Denton and Amanda Rose, who teach at Foggy.