I have the same situation when using my climber. All the trees seem to have a small diameter with little cover around. I saw that you don't wear factory camo, which is cool, more power to ya! If you do decide to try it, ASAT 3-D suits work awesome for that situation. I get away with insane things in this pattern.
Maybe grey and white plaid in a big pattern, like the checker board kind. From what I have learned, when you look up at your tree that has minimal cover, you mostly see the sky and a few limbs. Anything dark would stick out bad.