Using NOAA free api data to get wave height

I am trying to make an app that shows wave height and other marine forecast data for the Chicago area. I was hoping to use the NOAA government website which has a free API.

Using their docs I was able to narrow down some api calls that are close. But what I am really after is what is displayed here:
https://marine.weather.gov/MapClick.php?zoneid=lmz741

It looks like it is a straightforward pass in of info with the current day and next couple days with information on storms/waves etc.

https://www.weather.gov/documentation/services-web-api#/default/zone
This has many different options, and I have looked though many of them. The only one I could find with waveHeight was https://api.weather.gov/gridpoints/LOT/76,75. But it is sometimes just 0, and other times is 0.6096m (2 feet). The times are strange as well picking almost arbitrary hours between the days and then jumping 4 days ahead for the last one. This clearly isn't as detailed as when it is saying "2-4 feet subsiding to 1-2 feet," or similar.

I was wondering if anyone knows how to just get the marine forecast that they post. It seems like it should be so straightfoward with them showing the office (LOT) and zone (LMZ741). Yet nothing seems to show that data.