Many years ago, polarization on 2 meters was a hotly debated subject. For
instance, in New England, horlzontal was the preference but in New Jersey
vertical ruled. Now this was around 1950, well before FM became widely used on
2 meters. So there were several articles in QST and CQ about so-called
"flop-over" arrays. Probably the best known was the pair of 5 element Yagis,
the design for which was worked out by a W2 in Southern New Jersey.
Fast-forwarding by 50 years or so, I would think you could do a similar
thing with a pair of Yagis. It should work out better than a single Yagi,
since the feedline wouldn't be parallel to and in the same plane as the
elements when you're using vertical polarization.
73
Cal K4JSI