Takes advantage again of lough tip for maintaining red herrings?

'tip for maintaining red herrings?' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'takes advantage again of lough' is the wordplay.
I cannot really see how this works, but
'again' could be 're' and 're' is present in the answer.
'of' could be 'o' and 'o' is found in the answer.
'lough' could be 'l' and 'l' is present in the answer.
This may be the basis of clue (or it may be nonsense).

Can you help me to learn more?