Tedd,
I would deck it with 2x6's. I have a 7500 GVW trailer with 2x6's. I would install three tie-downs across the back, three across the middle and three across the front. If you are hauling the cubs two wide then you use a clevis on the hitch of the cub and chain or strap it to the outside tie-downs. Use a nylon strap around the front axle to the front tie-towns. If you are hauling cubs in single file you can use the center tie-downs.
I would deck it with 2x6's. I have a 7500 GVW trailer with 2x6's. I would install three tie-downs across the back, three across the middle and three across the front. If you are hauling the cubs two wide then you use a clevis on the hitch of the cub and chain or strap it to the outside tie-downs. Use a nylon strap around the front axle to the front tie-towns. If you are hauling cubs in single file you can use the center tie-downs.