I have been considering installing a 3/4 tongue and groove hardwood (rosewood) floor over a 3/4 plywood subfloor and am unsure about my options. The flooring is prefinished, so I don't want to face nail any of the boards. I was thinking about floating the floor but it seems that no one recommends doing that and I am not sure why. Any help would be great.

In order to install prefinished hardwood floors you must use a hardwood floor nailer. You can use an air one or a manual one. I like the manual ones better as they seem to get the wood tighter. All the boards are nailed in the groove and only the edges where you can't get the nailer in are naile with finish nails. Hope this helps

You can't float the floor as it will buckle over time due to any variations in temperature or humidity. If a floating floor is what you want you should look into Pergo or some other type.

I was just hoping that I could float it. It is a relatively small area (@100 sq. ft). But, I guess I will just use an air nailer/stapler.