That sounds really great...except, how does he plan on ensuring they don't float around? I've got an entire giant cottonwood that's been floating for more than three years. I've got it tied in place now, but it just doesn't want to sink.
Perhaps the root balls themselves won't float...but I'd still ask. That would be awesome structure. She might get kinda tired of looking at them, until they get submerged...just a heads up, from my wifey's experience.
In a lifetime, the average driver will honk 15,250 times. My wife figures I'm due to die any day now...
