I've done a lot of floating laminate around the house. On the scale of difficulty, I think this will be the easiest job this "vintage" trailer has tossed at me, from wiring issues, to rotted subfloors, to burst pipes and leaky tank valves. I'm actually looking forward to taking a break from real repairs and just doing a floor.
My original plan was to install sideways, put the first pieces flush to the front gaucho. Then, as I hammer in the next pieces and they click in, the floor will remain as far forward as possible, which would happen the first time I apply the brakes down the road anyway. I don't want there to be any movement at all during driving except temperature expansion.
Also, if that movement forward isn't minimized, then those pesky little turns around the bathroom doors, etc. could be a source of headaches if I cut those to a 1/4" and the floor slide forward 3/8". I'd end up with separation around those parts. If I install from the front back, always keeping the floating floor flush with the front couch, I won't have to worry about those little areas.
I plan to continue the flooring only to visible points, not under the gaucho. If I did, though, I would install the couch to the subfloor first, then install laminate floor around and underneath. Or, if it is enclosed, a completely different section of flooring.
I am now beginning to wonder about lengthwise installation. Hmmmm... I wonder if that would look better.
So...you bought a vintage trailer, did you, honey? Good deal, was it? Oh, just a couple of repairs, huh?
Drat, now our little Argy is starting to grow on me. I guess you were...were...were...right, honey.