I have about 30 or so flights under my belt. I have flown over bodies of water as well but it has been calm and with no people to keep from flying over. I will be going to Rehoboth Beach, DE tomorrow and will be taking my P3A with me. Other than the normal considerations and keeping it and others safe. Anything else i should worry about? Sand, waves throwing visual sensor off, etc... Any tips would be greatly appreciated.