Think carefully about going naked, being of the same mind (6)

I believe the answer is:
onside
'of the same mind' is the definition.
Both the definition and answer are adjectives. Perhaps there's a link between them I don't understand?
'think carefully about going naked' is the wordplay.
'think carefully about' becomes 'consider' (I've seen this before).
'going naked' says to take the centre (the word stripped of its outside letters).
The centre of 'consider' is 'ONSIDE'.
'being' acts as a link.
Can you help me to learn more?
(Other definitions for onside that I've seen before include "in a good position" , "is in state to continue playing" , "(In football) not in forbidden zone" , "in a position to score?" , "Noised (anag.)" .)
