We did this same boat trip, and enjoyed it ... we loved the views from the Dugi cliffs, and swam in the bay near the boat docks. We did try swimming in the salt lake, but found it slimy and warm - unappealing.
I thought you did when you commented on my other video about day trips from Zadar. My favorite part was Kornati and our short visit wasn't enough. I have to sail around that area!