How To Do The Galleon's Graveyard Cannon Minigame?

I'm doing the Galleon's graveyard dungeon and I have to do some kind of minigame with cannons (not with the armoured pirate) and I don't know how to complete it.

 

well basically from what i learned yesterday from doing it uh spam it :I i have the feeling that i kinda broke it though D: and it takes for ages to complete ._.

 

it's litterally impossible, I played for 2 WHOLE HOURS and got in 1 hit OUT OF 3 NEEDED

 

noooo its possible ._. i did it yesterday 3times .-.

 

After which course?

 

You have to look at the bullets coming from the enemy ship, counter them in the same pattern, once you finished shooting shoot the first available one and it might hit the ship. It is never impossible.