Floating or glued down be very careful your subfloor is dry and that you acclimate the wood to the environment before installing. This is very difficult with any engineered or plied wood. It may be a good idea to have a wood floor inspector come by and use both a pin and non-invasive meter on your subfloor and product. Unlike solid wood, you are only able to determine the highest moisture content in the piece and cannot make a gradient of the moisture throughout the thickness of the materials
There is a big misconception that engineered woods do not change dimensionally. While it is true they will not shrink or swell across the width any where near as much as solid wood, they will shrink and swell in the lengths. Most engineered woods shrink/swell .5% in both length and width. !/2 percent in width is nothing but in a four foot length is can be very visible gaps at the end joints. Regardless of installation method, I would use a high quality moisture BARRIER (not a moisture retarder). There is a huge difference between the two. If you glue it (and I would do that if it were my boat) use a high quality high solids urethane adhesive.
For manufacturers, I suggest avoiding any far eastern produced flooring (you can read this as Chinese). I have inspected a vastly higher incidence of these versus domestically produced floors. I would also avoid some of the larger better known outfits for the purchase; Big Orange, L L, etc. My industry (floor forensics) is riff with stories of how they deal with complaints and defects...
