Lazy type this writer would ultimately enrol with hesitation (5)
I believe the answer is:
idler
'lazy type' is the definition.
(I've seen this before)
'this writer would ultimately enrol with hesitation' is the wordplay.
'this writer' becomes 'i' (the person who is writing these clues).
'would' becomes 'd' (I've seen this in other clues).
'ultimately' indicates one should take the final letters.
'with hesitation' becomes 'er' (I've seen this in other clues).
The final letter of 'enrol' is 'l'.
'i'+'d'+'l'+'er'='IDLER'
(Other definitions for idler that I've seen before include "Lounger" , "Not working so hard" , "Man off watch" , "Lollard" , "stationary car perhaps?" .)