Can the hunters choose not to take the card as a trophy? IIRC it's optional.
At what point is the decision to remove the card from the row final? That is, can the hunters roll to hunt, then confront the predator before deciding to collect the card? It seems logical that they could, because the hunters do not reap the rewards of hunting until after confronting the predator, and a trophy is a benefit.
It's not optional and is strictly non-beneficial in the solo game since there's no scoring and it permanently (absent climate change) reduces the diversity of potential prey.