Hello, I just began to practice speedrunning for this game. I've seen a couple of videos where the runner gets a 4th hit on Del Lago without ever dropping the harpoon, Del Lago just barely missing them to the left. However, 90% of the time I try this, it goes straight for me and knocks me out of the boat. What are the requirements/inputs needed for Del Lago to miss you?

I've looked over a couple of tutorials but all of them drop the harpoon and steer right after the 3rd hit..