Jumping over ghastly, gaping golfer (12)

I believe the answer is:

leapfrogging

'jumping' is the definition.
(leapfrogging is a kind of jumping)

'ghastly gaping golfer' is the wordplay.
'ghastly' indicates anagramming the letters (a ghastly spelling of the words).
'gaping'+'golfer'='gapinggolfer'
'gapinggolfer' is an anagram of 'LEAPFROGGING'.

'over' acts as a link.

I've seen this clue in the Sydney Morning Herald.

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