Do both land and wet sand/surf and determine for yourself which is best for you and your detector. In general, you'll find more junk on dry beach than the surf but much easier to retrieve targets from the beach than surf. Some VLF detectors have a hard time with wet sand and surf. Also depth may be affected so that only shallow targets are found in the wet sand/surf. Since your detector only has a water proof coil, take great care when working the surf - one drop and it is all over. Suggest you stay on dry sand until you gain experience working with your machine. When people ask what I have found, I always say "peace of mind". Don't monetize your detector time (e.g., I only found this or that in so many hours of detecting - Its not worth my time.) Rather, enjoy the experience and your time on the beach. Metal detecting is much like meditation - it calms the nerves, eases the mind and can put your head in a nice place. Enjoy the experience, regardless of what you find, and you'll love metal detecting for years to come.