SGJ (St. Augustine, FL) is ripe for this type of ULCC service. Year-round sunny beaches, plenty of elderly people/snowbirds, a decent terminal (recently used by Via Air for E145 service to CLT) and an 8,000 ft runway. Sure, JAX is nearby, but anyone south of SGJ will want to use it rather than JAX. Allegiant has done a great job with airports like Punta Gorda - no doubt Moxy could use the same strategy so long as the facilities exist.