Coarse fellow responsible for hay-making spectacles? (5)

I believe the answer is:

yahoo

I'm a little stuck... Click here to teach me more about this clue!

'coarse fellow' is the definition.
'yahoo' can be an answer for 'fellow' (I have seen 'crude fellow' mean 'yahoo' so perhaps 'fellow' could also mean 'yahoo'). I'm unsure of the 'coarse' bit.

'hay-making spectacles?' is the wordplay.
'making' indicates an anagram.
'spectacles?' becomes 'oo' (I've seen this in other clues).
'hay' is an anagram of 'yah'.
'yah'+'oo'='YAHOO'

'responsible for' is the link.

Can you help me to learn more?

(Other definitions for yahoo that I've seen before include "Boorish louts" , "Gulliver's animal in human form" , "Savage" , "One of Dean Swift's brutish people" , "Lout, boorish person" .)

I've seen this clue in the Evening Standard.

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