If your trailer still bounces while loaded, there could be other issues that need attention:

• Your tires aren’t properly inflated.
• Your tow vehicle’s shocks are worn or aren’t designed for the load. (You’ll feel bouncing that continues after going over a bump).
• You need to shift the weight on the trailer.
• The trailer is overloaded and the suspension could be damaged.
• One of the trailer axles might be damaged.
• Your hitch height is not set so the trailer tows level.