If you fancy canoeing, you can take this up (5)
I believe the answer is:
kayak
'fancy canoeing you can take this up' is the definition.
The definition suggests a singular noun which matches the answer.
'if you' is the wordplay.
I cannot quite understand how this works, but
'you' could be 'ya' (non-standard spelling as in 'see ya later') and 'ya' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for kayak that I've seen before include "Inuit's light canoe" , "Type of canoe" , "Lightweight canoe" , "Inuit craft" , "Small canoe - a palindrome" .)