Nail to secure back bit of stable (4,4)

I believe the answer is:

tack room

'bit of stable' is the definition.
(room for horse-riding gear)

'nail to secure back' is the wordplay.
'nail' becomes 'tack' (tack is a kind of nail).
'to secure' becomes 'moor' (mooring is a kind of securing).
'back' says the letters should be written backwards.
'moor' in reverse letter order is 'room'.
'tack'+'room'='TACK ROOM'

(Another definition for tack room that I've seen is " stable place".)

I've seen this clue in The Independent.

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