How critical is it to have a perfectly level trailer?

LEVEL, or straight alignment between the vehicle and trailer gives you the strongest connection. Besides being level. You can "bend" a V. Harder to bend a -------- straight line connection. If you have to have a panic stop, you want the strongest connection. YES, you need a equalizer hitch connection. More expensive, but the SAFEST way to tow a trailer regardless of length or weight. Doug