Final answer:
Insufficient tongue weight on boat trailers can lead to fishtailing due to instability caused by an imbalance.
Explanation:
When boat trailers have too little tongue weight, they tend to cause the trailer to fishtail. This happens because insufficient tongue weight results in an imbalance that leads to instability, causing the trailer to sway side to side.
Learn more about trailer tongue weight and stability here:
https://brainly.com/question/14342326
