No doubt brakes are better.
I have an idea for a very light and simple surge brake for a teardrop.
It would be basically a very large nascar style flap on the roof of the tear, it would open in the direction of travel.
You can see the nascar flaps here-
http://auto.howstuffworks.com/auto-raci ... afety2.htm.
A simple cable would pull it close as long as there was drag on the hitch. Like a regular surge brake, the cable would slacken whenever the trailer began to push the TV, and the flap will open. Patent Pending.
Not as good as regular surge brakes or electric brakes, but much lighter.
The penalty is the fabrication cost upfront.
I'm not sure if it would cause the trailer to be unstable, so experimentation is in order.