Coastamerica rhymes with:
westamerica, marketamerica, westamerica, amerika, asiamerica, bankamerica, comerica, d'america, gardenamerica, healthamerica, marketamerica, midamerica, realamerica, superamerica, transamerica, westamerica
Coastamerica sounds like:
coastamerica's, costner's, costumers, customer's, customers, customers'