Even MORE goofing around.
If you had something with a tunnel that sat above the waterline, then it wouldn't plow.
I played with this concept a while ago. Designed the tunnel size to be comfortable to kneel over. Even made a small mock up tunnel to test comfort. It was pretty comfortable. You'd need to install a small bench on top of the tunnel for sitting.
2 biggest concern for this concept are stiffness, (keeping the to 2 pontoons from wanting to flex apart) and weight (this would weigh more because it has more surface area to construct).
I SUSPECT is would be very stable...maybe even enough to stand comfortably without too much "pucker" factor. But that's a lot of therory and that doesn't always reflect reality.
And again, concept is radical and I'd want to have one prototyped before publishing.