They have day passes available and full restaurant, bar, and pool.

Project was completed by well known local builder.
Grupo Zihma Building & Design

We're currently in Zihuat. Would like to spend a day on Troncones. Any suggestions for places to hang out with shade, food, drinks and possibly (but not necessary) a pool? Thank you!

The Inn at Manzanillo Bay is our favorite go-to place for hanging out on the beach at Troncones, enjoying a quality meal, and they have a pool. Fits all your slots.

http://www.manzanillobay.com/

Alternatively, you might decide to turn right, head north about 4 km or a bit more, and find yourself in the smaller village of La Majahua. There, you will find several beachfront restaurants as well. Again, I think you would find them welcoming of your business for food and drink.

Majahua is a gem. Definitely worth a day or two of blissful relaxation.

At that point, you will find a string of close to a dozen beachfront restaurants both to the left and to the right. I suspect that any of them would welcome you to spend time there, enjoying food and drinks while also enjoying the beach.

Alternatively, you might decide to turn right, head north about 4 km or a bit more, and find yourself in the smaller village of La Majahua. There, you will find several beachfront restaurants as well. Again, I think you would find them welcoming of your business for food and drink.