[TowerTalk] HAM IV rotor and 2 antennas ???

[Douglas Ruz / CO8DM]

Hi all,

I have a HAM IV rotor here...I see in the manual the maximum wind load area 
is 15 sq ft installed inside the tower.

I have a HD spiderbeam for 10, 15 and 20m...The spiderbeam wind load area is 
3,5 sq ft.

I want to know if I can install a 2 element 40m antenna few feet below the 
spiderbeam without broken the HAM IV ?

What kind of 40m beam I can install to keep the wind load area as low as 
possible ?

Thoughts?.

Thanks,

Doug, CO8DM