Pull along (3)
(Other definitions for haul that I've seen before include "With effort, draw" , "Quantity stolen in a robbery" , "Pull forcibly; catch" , "Drag (something heavy)" , "Drag; booty" .)
'pull along' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for drag that I've seen before include "Haul - queen's garb?" , "Tow" , "Tedious thing" , "Haul - a bore!" , "Pull along roughly" .)
'pull along' is the definition.
(towing is a kind of pulling along)
This is the entire clue.
(Other definitions for tow that I've seen before include "Pull or drag along behind" , "Drag along behind, say barge" , "Prepared fibres" , "Pull using cable" , "Pull away" .)