The most recent completed America's Cup uses a boomless dual skinned mainsail held up by a fairly traditional mast. The Cats and Tris between the IACC and the AC75 (2010, 2013, 2017) are more something to take inspiration from I'd think with their more complex internal construction. SailGP's wings, have proven to be quite versatile and durable, albeit with significant maintenance. I'd assume a cargo wingsail would be a bit beefier than a foiling raceboat's.

Despite the switch from wings back to "normal sails" In my view, this latest generation of America's Cup is especially awesome from a follower's perspective for two distinct reasons.

1. The rule is similar to last gen, a foiling 75 foot monohull. A number of the initial engineering work and sorta figuring out how to design and build the various systems has already been done, a team wanting to join in on the fun doesn't have to reinvent the wheel with everything unless they believe they can have an edge by doing so. There are old boats for sale as well as a 40-foot model for training the athletes on their controls.

2. There's a centralized repository for reconnaissance. Meaning, every team, and some of the media have access to sailing, launching, and training footage of every team. What has for over a century required each team employ their own multi-national team of spies to surveil each competitor. It was unnecessarily costly and the fans get the added benefit of being to watch much more of each team's boats as their systems morph throughout the design process. I have a friend on the recon team and as well have been exposed through a yt channel, "Mozzy Sails"[1], who does a great assessment on the various teams systems developments.

If you're a fan of F1 for the engineering bits, you'll likely feel right at home following some of the America's Cup coverage. Even the technical documents like the Class Rule and super interesting to me. [2]

[1] https://www.youtube.com/channel/UCK0h2Yj6jcyeXGeITonYnOA [2] https://www.americascup.com/files/m5498_AC75-Class-Rule-v20....