*Have 7% of the trailer's actual mass on the hitch. Measure with some
bathroom scales and a length of wood cut to the correct height to fit
between hitch and the scales. It's important to get this number right
- no more, no less. If the 7% value is more than the car's noseweight
limit, you'll just have to keep within that limit and accept a less
than optimum noseweight.

Keep the trailers inertia about the vertical axis low, this means never put
weight in the back to counterbalance too much weight in the front. Heavy
items should be near the center of gravity of the trailer, a drawer near the
axle is the best place if heavy items have to be in the trailer.

Michael