I am trying to find a trailer i need something with 25' of floor plus a dove tail to haul scrap iron on behind my c70. I am going to look at a 30' gooseneck 3 axle trailer. What is the pros and cons between a 3 axle single tire and 2 axle dual tires? My loads are more balk than weight on a 20' i am lucky to get 6ton.