Has anyone out there put a roof rack and space box on top of their Westy?

I have put two roof bars up on top of my pop up and I am considering adding
a modest space box (maybe Yakima space booster?). With the two bars up there
alone it can be heavy popping my top up.

what is your experience with pop tops and space boxes especially popping
your top when the box is full?

Anything to recommend?

Anyone advise against?

Thank you,
Bryan Duggan
bduggan@mindspring.com

Taj 89 Westy
    86 Syncro