I will probably make my own trailer since I have lots of metal, wood and wheels/tires around to build one from. But I'm guessing my home built would be close in weight to a manufactured trailer. I would need at minimum a 5x10 but maybe a 5x12, 6x10 or 6x12. I would be hauling my Toro 520xi with 60" deck and one Swisher 60" pull type mower. Next time I'm at my shop I should measure the entire width of the 60" deck on my 520xi with the deflector pointed up.