I think after all i have decided to keep my 6'x1-' Cam dump trailer. I have decided to add sides to it. So, my question is, how high to go? I ONLY haul horse manure and wood shavings (sawdust) in it, so it is pretty light. My dad and I have drawn up some plans for frames and such. Would 5' or 6' side be OK with a proper frame? It will be 100% enclosed with a door on the side for a ramp to get into the the trailer and a swinging door in the back over the gate. We will be getting rid of the "spreader" gate that we have now and get a barn door gate. We will also be putting a roof on it. My dad is really good at carpentry and has 40 years of experience, so I am not worried about that.