Trailer with dump
Here is a pic of my trailer. I would suggest putting the dump on the rear. Unless you have a very smooth floor, there are times when the load will not slide out on its own. The dump is 6' x 6' and approx. 4.5' deep. If you have a dump that lifts to the side I might be concerned with the trailer tipping a little when in the raised position. At times I have to punch the truck in order to get the load to move. I have a 4' wide door on a 7' x 6' w/ extension storage compartment on the front. Remember you can go wider and taller for your needs. I elected a shorter height because of the wind resistance. Hope this helps.