Off Road mower Equipment Utility Trailer

I am going to be build an off road mower soon and i am going to be using it to pull a trailer full of equipment and maybe people up a rutted out mountain road. I thought i would try to get ideas for the trailer build here and then post my progress as well.

have you thought of making something like this?

http://www.princessauto.com/pal/product/8197220/Atv/750-lb-Capacity-Flatbed-Trailer

http://www.princessauto.com/pal/product/8363079/Atv/Galvanized-Trailer-Dump-Cart

http://www.princessauto.com/pal/product/2440011/Atv/2%2C200-lb-Capacity-Utility-Wagon

I've always wanted to buy the flat bed one and the 2,200lbs Cap. one, they seem to be like good trailer designs. They might give you general ideas for trailers the 2,200lbs cap. trailer looks like a mini wagon for a gravity box.