Use this convenient site for all the beach information you will need while staying at The Sand Bucket at Seaside. It lists all the access points for vehicular traffic (yes, there are spots that you can drive on the beach) and all the foot paths for access to the beach.
Vilano Beach is like being tucked away in a tiny beach town. Coquina sand and a near-shore break make it popular with surfers and kite boarders as well as sunseekers. This was the beach that guests of Henry Flagler's Ponce de Leon Hotel went to in the late 1800's. Today, shark teeth "hunters" report this area of beach is best for their hobby.
Ponte Vedra Beach is the beach most northeast of St. Augustine. Mickler’s Landing is the most popular access point for visitors to this beach and the best spot to look for shark’s teeth. The sand on this beach ranges from peach to cinnamon colored hues. CNN included Ponte Vedra on its 22 Can’t Miss U.S. Beaches.