How will that work out?

I am not of the "carbon explodes on contact" school of thought. With that said, I am terribly unfamiliar with touring, pulling a trailer. The local salvage store has a baby trailer in which has seen better days, of the clamp attachment type. I was thinking of picking it up, and using some webbing to create a bottom for it, along with some bungee cords to pack and carry some supplies for a short weekend based ride and camp tour.
It appears to me that the clamp was designed for the chain stay of a steel frame, but looks like with a rubber insert I should have no problem adapting it. Will the stress of a load on the chain stay cause me any issues with my carbon frame, or should I consider looking into finding something metal, and more suitable for carrying the load?