[TowerTalk] Stacking a 2L 40M and Tribander

[Marsh Stewart]

My tower is a US Tower HDX-555. I'm planning to stack a compact 2L 40
monobander and a larger tribander on the same mast 10' vertically apart.
Which antenna should be on top?

The 2L 40M is lighter and has about half the wind load area of the large
tribander. So mechanically it should be on top. But, will it "shield" the
tribander and degrade its performance?

Marsh, KA5M