[Antennaware] Ideas?

[WarrenWolff at aol.com]

Greeting folks:
 
I must default to a simpler antenna system until the loot  shows up for the 
BIG tower
and yagis.
 
I am quite familiar with paralleling a pair of dipoles for two  or more bands.
 
This concept leads me to consider paralleling a pair of  verticals for 40 and 
20 meters.
Before I invest in the aluminum, does any one know such a  system in use?
 
I suppose trying to get some 15 meter operation out of  such a system would be
pushing it.  I do not mind a bit of fixed matching  network at the base.
 
Comments appreciated,  Warren;  W7WY