A little late but since no one has posted I figure WTH. I went foldable for my setup. First, my yeti is only in the rig with the fridge is in there. Thus I do not need a full time solar panel mounted to rig. Your sentence did not state your uses, but I see a sweet trailer, if there is room for a 100+ watt panel why not do it? More so if you have a big open area where you live, minus trees, you are hard pressed not to find sun somewhere. Right?
My fold-able is something I can setup when needed, takes little room in the rig (attached to the Rangler net between it and the rear seat. I chose to go with a smaller than GZ panel and am happy with it. I have a Acopower 120W available on Amazon for @$300. here
When using with a yeti do not use the charge controller, infact they have a panel without charge controller and alligator clips for $30 less if you are hoping to cut a little extra budget and have no other used for it, if you search it out on Amazon. It works great, takes up very little room (a little bigger and just about as thick as a benchmark road and recreation atlas if you have/ know how big those are). But this way you can extend the panel/ tilt/ move for camp setup and following the sun etc. I liked it so much I bought a pair of extras to use with my Yeti 1250 and extra battery as part of my emergency preps around my place.
Not my video, but it gives you an idea on them.
Let us know what you go with mate.