You now know more than the rest of us.
How are you situated for space, tools and skills for fabrication? Do you think you could do better than an U-haul trailer with vortex traps, spatted and skirted pontoon fenders and a trailer tail?
I don't think I've posted my teardrop low-poly template trailer yet. Have you seen it?
edit:
Hey, you could rent different sized U-hauls (and do some Cardboard Aided Design) to see the difference that height and width makes.