What can happen if a trailer is too light?

When a trailer is too light, it can lead to instability while towing, causing the trailer to fishtail. This fishtailing occurs because the lighter weight may not provide enough downward force to keep the trailer aligned straight behind the towing vehicle during travel. A trailer that sways or moves side to side can be dangerous, as it may make it harder for the driver to maintain control of both the towing vehicle and the trailer.

In contrast, while a lighter trailer might seem easier to handle, it lacks the necessary weight to remain stable during fast speeds, turns, or when hitting bumps. Additionally, the boat floating higher in the water is not a direct consequence of a light trailer; it pertains more to the load distribution and dynamics of the boat's waterline. Better braking cannot be achieved with a lighter trailer, as a heavier load typically allows for better braking performance due to increased friction and stability. Thus, the most appropriate consequence of a trailer being too light is that it may fishtail, leading to control issues while towing.