"There has not been enough resource available to mount an adequate search so money raised will be paid to Kimbo who is currently funding some of the search effort herself", the page said.
It was understood Agnew's truck and dog were found at his campsite, but there had been no sign of the man himself.
Search and rescue teams were scouring the area yesterday along with Coastguard boats and a large number of volunteers were carrying out shoreline searches.
In a statement, police said Coastguard boats and a helicopter would return to the area to search today.
A large number of volunteers, including family and friends, were also carrying out shoreline searches.