After you beat him, take the rowboat ride and bring the photo back to Mews.
When you come back to Loch Ness, you play against the other two players for a submarine ticket. You get a photo but when you take it to the pub, it is proven to be a movie prop.
Now the first player returns, but refuses to accept his defeat when you beat him. But the bartender gives you a pennywhistle with which to call Nessie. Go back out in the boat alone (tell off the dishonest boat owner) and get your picture of Nessie.
There does not seem to be a horn on Cryptids Island. There is a flute (a pennywhistle) which you receive after the submarine ride, after you defeat the sore loser at darts again.
It is at Loch Ness.
They aren't arrows, they are darts (see the related question).
yes there is
Nothing, apparently. However, he gives you the pennywhistle when the darts player is a sore loser.
The Pub is to the right of the loch at Loch Ness. You will play darts there to win the tickets to the rowboat and submarine.
You win at darts a second time and get a submarine ticket.
On your first visit to Loch Ness, you can win a rowboat ticket by playing darts at the Pub (to the right of the Loch).
You get the Pennywhistle after your third victory in the darts game at the Pub. Take the rowboat out again (the operator has taken off) and go left twice, to a secluded lagoon on the loch. Use the pennywhistle there to summon Nessie.
On cryptids island, you have to get to a certain point and do a rematch with a guy at darts. Then he will say you cheated but the bar guy will give you the pennywhistle anyway.
You get the Pennywhistle after your third victory in the darts game at the Pub. Take the rowboat out again (the operator has taken off) and go left twice, to a secluded lagoon on the loch. Use the pennywhistle there to summon Nessie.
You get the Pennywhistle after your third victory in the darts game at the Pub. Take the rowboat out again (the operator has taken off) and go left twice, to a secluded lagoon on the loch. Use the pennywhistle there to summon Nessie.