On Wednesday, July 3, 2013 3:13:50 PM UTC-4, wrote:
I seem to remember something about older trailers having trouble when towed with RVs, but I can't dredge up any info on the issue with Google searches. Does anyone remember the scoop on this? I bought an RV over the winter and will be towing my older model (1984 I think) Cobra trailer with it to a contest later this month. Thanks, Matt

The issue was one of a few occurances of failure of tongues on older Cobras that have the round tongue.
2 things to do:
First, make sure you have a safety chain securely bolted to the body of the trailer in case of failure.
Second, regularly look for cracks near the welds.
Then- go have fun
UH