Endless training with supporter in a workable manner (11)

I believe the answer is:

practically

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'in a workable manner' is the definition.
I can't judge whether this defines the answer.

'endless training with supporter' is the wordplay.
'endless' means to remove the last letter.
'training' becomes 'practice' (practice is a kind of training).
'with' means one lot of letters go next to another.
'supporter' becomes 'ally' (I've seen this before).
'practice' with its final letter removed is 'practic'.
'practic'+'ally'='PRACTICALLY'

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(Other definitions for practically that I've seen before include "To all intents and purposes" , "how realist thinks" , "how DIY expert approaches his work?" , "Almost" .)

I've seen this clue in The Telegraph.

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