We have used a lot of bamboo in the rebuilding of our boat. It is great stuff and the strength to weight ratio is amazing. There are some things to keep in mind though, if you are planning to build a deck
out of it. You would have to use small diameter split poles or slats made from larger diameter poles which would require lots of bracing. It will be springy, which may be good, but it will also be slippery and the ridges may be uncomfortable underfoot. As it ages, splinters and the microscopic spicules that cause a rash could be a problem. I don't know of anything you could finish it with that would stick to it without sanding
off the waxy outer layer, you would probably just have to let it weather
and plan on replacing it every few years.
On the other hand, it would be extremely lightweight, strong and would drain well. Also cheap
and possibly free if you can find a stand that needs trimming. Plus the cool factor cannot be denied, especially on a Wharram.
A thought; when you are at anchor
you could lay out woven bamboo mats to make it more comfortable to walk and lounge on.