4 or 5 Fabulous Vistas -- the rest was just work. We did Diez Vistas on Tuesday, a hot, 30°C experience overall.
It's a lot of work for 3 or 4 stunning views. With a cumulative elevation gain of 860 m it's not worth the effort in my opinion. We also found trail markers non-existent in a few places. We misplaced the trail at one point and bushwhacked via my GPS app for a while fairly certain that we would intersect with the trail -- we did. We met up with some other hikers on the North Beach who echoed the same experience.
On the upside, the visibility was fabulous and it was uncrowded -- only encountered about 4 other groups.