Grab that bull by the neck and choke that MF. An integrated tube shroud which is as strong as a tube itself, can be any arbitrary taper or curved taper and the glue is as strong at the tube as well. Just as you can have a centering ring 2" inside a tube and still have a motor flush with the rear of the tube, you can also glue a fin to any arbitrary shaped "integrated tube" shroud and have it be exactly as strong as a cylindrical tube.

BTW what the heck is a rodeo?