How well do you know the Low Country?

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Across
  1. 4. The Salty Dog's name
  2. 7. Makes low tide smell like rotten eggs
  3. 10. First Heritage winner
  4. 11. This sound makes no noise
  5. 13. Name of Andrew Carrabba's original restaurant
  6. 14. This beach is not a pharmacy, trust me
  7. 17. Golf course where loser goes to the stockade
  8. 19. Known as "Fraser's Folly"
  9. 20. Be careful of the cannon on the 18th
Down
  1. 1. "Unicorn Meat" guitarist who sings top 40 hit "Sharks are our homies"
  2. 2. Oldest structure on HHI
  3. 3. Golf course where winner gets the coveted small plastic gold trophy
  4. 5. Keep the lights out at night for this slowpoke
  5. 6. Native islander (Hilton Head)
  6. 8. Restaurant on HHI having no affiliation with Van Halen or its bassist
  7. 9. Liberty Oak guitarist
  8. 12. Island in Beaufort Country which is not exactly a family vacation destination
  9. 15. US President who vacationed in Sea Pines while in office
  10. 16. Where Hornets and Superhornets go to land (and nest?) Oorah!
  11. 18. Chipped in to win the Heritage