[masraum]

Originally Posted by Tidybuoy

Just curious, what makes the Haulover Inlet have such extreme waves?

It's interesting, the page doesn't really get into too much detail about why, and mostly talking about going from the Atlantic towards the ICW. It looks like the folks in the video were going towards the Atlantic.

https://hauloverinlet.com/navigate-haulover-inlet/

(below is just an excerpt from the link)

Of more than 60 inlets in Florida, Bakers Haulover Inlet is one that requires experienced local knowledge or just avoid it, say captains in the area. The Inlet is man-made and was cut to connect Biscayne Bay with the Atlantic Ocean. Called Haulover, it is located at statute mile 1080 on the 3000 mile Intracoastal Waterway (ICW), and is the only inlet between Miami’s Government Cut and Port Everglades in Ft. Lauderdale.

The surrounding seas are mostly uneventful, but when you get near the jetties navigators should be aware of strong currents, constant shoaling and no channel that heads directly west to the ICW.

Stay vigilant as you pass through the inlet. When you navigate the Haulover Inlet on an incoming tide you’ll want to steer right as you head for the ICW. Many boats have been forced on to the rocks by their stern being pushed at a fast rate. You need to make sure you have enough power to stay off these dangerous rocks. The tide can suck you in and combined with the current make you confused about your speed. This can cause you to lose control and hit the rocks, run aground, or even sink your vessel!

This guy describes what he thinks is going on. It sounds reasonable to me.