Jane, heavy winds is where I tend to feel it. Ive had a few white knuckle experiences on some windy days and it makes me feel more secure...worth the investment.
Alot of people go on about how its not needed that you just need to "balance" your trailer. My tongue weight
is above 10% and the storage box on my back is fairly light
, my awning
, stakes and ropes, 2 25' white hoses and a hatchet...and 2 aluminum adjustable levelers...I use the flat surface of it when camping like an extra table... but my first sway experience happened without the trunk/cargo carrier. It can happen, a heavy side gust and you will feel your trailer move/rock on you.