"A2: Don't try and mount four bikes on the hatch unless you want to replace
the hatch window.  The bumper (and/or frame depending on how you look at it)
will hold that weight."

Is that an opinion? Or factual experience? Was it difficult finding
replacement
glass in your instance?

I had that Yakima roof rack mounted on the hatch for 7 years on 2 different
vans
and had 4 bikes on there several times in the late 90's, early 00's and
never had
any such incidents. Nothing about the rack comes in contact with the glass
and
the towers/feet of the rack are planted on the stiffest, most robust part of
the
entire hatch, just below where it curves downward, and at the top of its
"pyramid"
slope.

bob