The sort of profit on fishing equipment? (3)
I believe the answer is:
net
'fishing equipment?' is the definition.
(I've seen this in another clue)
'the sort of profit on' is the wordplay.
'the' becomes 't' (the is pronounced as a 't' sound in some dialects).
'sort of profit' becomes 'ne' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'on' says to put letters next to each other.
't' put after 'ne' is 'NET'.
Can you help me to learn more?
(Other definitions for net that I've seen before include "It's see-through" , "Trap; open-weave fabric" , "Mesh; after tax" , "Lattice" , "Mesh; profit" .)