With your shrimp thawed, begin to put them on pre-soaked skewers; Set aside.
Pre-heat your grill to around 350-400F. While preheating, place butter, minced garlic, and thyme in a small cast iron skillet on the top rack; stir occasionally while the butter melts.
Place shrimp on the grill, and liberally brush on the butter mixture while its grilling. turn about once every minute and brush more butter on. About 5 minutes or until shrimp is opaque. Serve them up and enjoy!