The most common and most likely answer to this crossword clue is the 5 letter word TRAWL
T
R
A
W
L
More clues leading to the result TRAWL
- Fish with large abnormal growth thrown back
- Large skin blemish shows up in thorough search
- Go fishing, bitterly cold in Tobol on vacation
- Officer brought up to eat uncooked fish
- Catch boring item on covers of The Mirror
- Comb sides of tower with pointed instrument
- Heading for this lake to catch raw fish
- Tropical coasts contain green fish
- Told derelict to catch with a net
- Briefly snare with ultimately cool fishing net
Buddy explains!

The straight part
We know that "use of Net" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case use of net = trawl.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does TRAWL mean?
TRAWL noun- A net or dragnet used for trawling.
- A long fishing line having many short lines bearing hooks attached to it; a setline.
- To take (fish or other marine animals) with a trawl.
- To fish from a slow-moving boat.
- To make an exhaustive search for something within a defined area.