Brazos River Rides…do they exist?

Every time I cross the Brazos River under 290, 59, or I-10. I'm impressed at its size and wonder about its navigability (it seems wide enough). I also wonder why nobody offers tours on the river.

While its murkiness is no secret, I wonder if someone with an airboat (ie, no hull or prop in the water) could have a viable business offering runs up and down the river.

Has anyone ever attempted it? Have any of y'all ever ridden on it?