I just figured out a way to raise the light basically until it doesn't heat anymore.
I cleared off a shelf I had in the garage that has solid posts that go all the way up. I took the upper shelves off and made the one shelf about 2 feet off the ground, set their bin on that, then clamped the light onto the post of the rack. I hover it about 6" higher than it was before, and once it heats up again, I'll check the temp and adjust if needed.
Thank you all for the help so far. I'll update with pics of the new pen and the ducks when I am done building it.