Around lake, watch person catching fish (7)
I believe the answer is:
tickler
'around lake watch person catching fish' is the definition.
I can't judge whether this definition defines the answer.
'lake watch person catching fish' is the wordplay.
I cannot really understand how this works, but
'lake' could be 'l' (geographical abbreviation) and 'l' is found within the answer.
'watch' could be 'ticker' (synonyms) and 'ticker' is found within the leftover letters.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for tickler that I've seen before include "Poser" , "puzzle" , "Poker" , "trout farm employee?" , "Difficult problem" .)