The drone search is expected to continue tomorrow.
A police spokesperson said they were aware of people in the local area who were undertaking their own searches.
"While we understand the desire to help, we would urge people to please leave this to the official searchers.
"Anyone heading out into this area risks running into trouble themselves and needing further assistance."
Police have appealed for information from anyone who may have been fishing in the area or anyone who noticed anything of note in the area on Sunday.