Buttermilk on river right isn't too bad, has some trees. I think a larger cottonwood maybe.
Ute 2 is also nice, junipers for shade, busy area due to hike in fishers.
Cadis is rocky and small, with some shade. Great hike up the canyon behind camp. Slow water for swimming.
T-Dike is so so in my opinion. Some junipers near the mouth of the side canyon can shade you till sun drops more.
I think there are some trees at boulder garden also. Never stopped there. As mentioned, you can boat two nights, one per camp. Skip the mules and haul your gear. Have fun it's a great stretch. Pm if you want more details.
Known Cairn Hater