[NLRS] Need advice on yagi stacking

[David Palm]

Friends,

The Palm family got on the air as much as we could in this last contest and
we enjoyed handing out some points.  Things are little by little freeing up
here, so I'm starting work on revamping the antenna stack, in anticipation
of the September ARRL contest.

The antennas I currently have are a Cushcraft A50-5S 5-element yagi on 50
MHz, a Cushcraft A148-10S 10-element yagi on 144 MHz (not optimal, I know,
but it's what I have), a home-brewed N6NB 8-element quagi on 222 MHz, I'm
about to buy a 22-element 432 yagi on a 14 foot boom.I also want 900 and
1296 MHz in the same stack.

My question to the group is how best to stack these?  Can the 900 and 1296
MHz antennas go under the larger antennas, since they need less clearance
without "seeing" the other antennas, or should I just go ahead and do the
classic "Christmas tree", going up from 50, 144, 222, 432, 900, and 1296?

Thanks and 73,

David  W9HQ