You have 8 feet of planting space to work with? Dypsis lutescens, The Areca or Butterfly Palm. You will have palm fronds to trim and pickup and total privacy.

Thank you Christopher, I've read Arecas can grow out of control.

That depends upon the definition of out of control. They will grow to 20' tall and as they mature the screening will be above the fence and you will be looking at the sculptural trunks at pool level. There will be palm fronds to trim and pick up. At a minimum you could plant a few of them in the critical sight lines for privacy and smaller shrubs like croton between them.

This is all assuming there is eight feet width of planting space.