I am getting ready to install 800 sq ft of 6" wide t&g hickory. I like the look of a screwed and plugged floor so I am planning on adding 2 screws to each plank and plugging them with walnut plugs. The screws will be going thru the 3/4" hickory, the 3/4" subfloor and into the floor joists. What would be the best screw to use ??