Pass leads to simple poacher's goal (5)
I believe the answer is:
spend
'pass' is the definition.
(I know that pass can be written as spend)
'leads to simple poacher's goal' is the wordplay.
'leads to' indicates taking the first letters.
'goal' becomes 'end' (both can mean a purpose).
The initial letters of 'simple poachers' is 'sp'.
'sp'+'end'='SPEND'
(Other definitions for spend that I've seen before include "Use (money etc)" , "Blue" , "Outlay" , "Use up (one's resources)" , "Blow" .)