Trainers » Gutsy Pickaxe
Can I play Gutsy Pickaxe if I have no Benched Pokemon?
No, you cannot. Since it is mandatory to attach a Fighting Energy if you draw one, you have to have a Benched Pokemon in order to play the card.
Source: TPCi Rules Team (2022-06-09)
Trainers » Gutsy Pickaxe
Can Gutsy Pickaxe attach Single Strike Energy if one is revealed as the top card of my deck?
No, it cannot. Single Strike Energy doesn't count as a Fighting Energy while in the deck.
Source: TPCi Rules Team (2022-06-02)