You're not quite as desperate as me yet (wife and 3 daughters), but if it's time to level the odds a bit and bring up the male content, you'll need to use a manly moniker. Here's my 5-bits worth with reasons...
Blade - Sturdy and dependable, like the Buck, Leatherman or Swiss army knife on your belt.
Rambler - Self Explanatory, the perfect hiking companion's name
Copper - This natural resource has an earthy feel, and appears to be a nice match to the handsome little fellow's glossy coat.
Twister - Very natural, nicely describes the path most dogs take up a hiking trail (not so linear).
Boomer - Airedales are fairly swift, like a sonic boom, + his bark will be fairly booming if a bear comes sniffing around your tent
Have fun choosing!