glue/nail down wood flooring installation: any disadvantages for click-lock?
I work for a company that makes laminate flooring, we make different thickness and profiles(profile is the joint)I have 4 rooms with it in and they are all different, each was an upgrade on the other couple of years apart. The latest I put in was the best for connection, the long side just push tight together at angle then firmly push down to click, the short edge though has a plastic comb like membrane inserted during the manufacture of the panel and this locks it in place and is easy to fit and hard to separate(be warned) push the ends slowly together and you'll hear a distinct click.

One thing never nail wood to the floor it needs to float due to heat or humidity changes. Laminate states a 10mm gap all round the room, leave the gap-you may be a little under but no less than 8mm-it will expand with right conditions and if no gap left can buckle. If you decide to glue, not a problem, just use a waterproof glue to help seal the HDF(MDF but higher density)

Stilettos make holes in engineered wood flooring but not Laminate, dog paws destroy all types of wood flooring