Crossword Genius

Runs behind simple boat (4)

Ross

I believe the answer is:

raft

'simple boat' is the definition.
(I've seen this before)

'runs behind' is the wordplay.
'runs' becomes 'r' (cricket abbreviation).
'behind' becomes 'aft' ('aft' can be a synonym of 'behind').
'r'+'aft'='RAFT'

(Other definitions for raft that I've seen before include "A whole lot" , "large collection" , "Flat floating device" , "Floating framework" , "Flat water craft; great collection" .)

I've seen this clue in The Telegraph.
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