It's not easy going on vacation in turbulent Ulster (8)

I believe the answer is:

struggle

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'it's not easy' is the definition.
I can't tell whether this definition defines the answer.

'going on vacation in turbulent ulster' is the wordplay.
'on vacation' means to remove the middle letters.
'in' indicates putting letters inside.
'turbulent' indicates an anagram.
'going' with its centre removed is 'gg'.
'ulster' with letters rearranged gives 'strule'.
'gg' placed inside 'strule' is 'STRUGGLE'.

Can you help me to learn more?

(Other definitions for struggle that I've seen before include "Strenuous effort against odds" , "Strenuous effort against opposition" , "Laboured effort" , "Strive; compete" , "Contend; very hard task" .)

I've seen this clue in The Telegraph.

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