Some Bamboo manufacturers do say their product can be floated, with t&g glue, check with the manufacturer, ( we're not talking about "click" systems). I still wont float a solid product, Bamboo included,(especially), due to the stability, and t&g issues not floating friendly,(like finish on tongue, loose profile, to name a few). On a side not...been out on a few estimates to replace floated bamboo, you could literally just stack up the planks off the floor. Spot nailing is a bandaid. Why not just install it right, naildown or gluedown. Some of those manuf., you got a love um, no matter what they say to sell wood, their guarantee is as long as their driveway