Ron, I wacked the bottom off my speedmaster radio box and made the box shorter,then epoxied a piece of 1/8 ply on for a new bottom for the box so the pipe didn't have to stick up in the wind so far. that also let me put the motor lower in the hull. there is enough room to throw a cat between my radio box and the tube. If you like I'll shoot some pix of my finished boat to show the placement of things the way I did.
Mike