Good point. With a positive tongue weight (trailer center of mass ahead of the trailer axle) there will be a centrifugal thrust on the bike through a turn even if you're not braking. All the worse if you're also braking.

If the center of mass of the trailer is behind the trailer axle (negative tongue weight -- shouldn't be loaded this way), there would be a centripetal (inward) thrust.

So... does the rule of thumb for automotive trailers apply to bikes? 10% of the weight of the trailer on the tongue? Maybe helps to minimize sideways thrust at the rear wheel of the bike. Not always easy to do depending on the shape of the load & of the trailer.

As I gain experience with the trailer & think about this stuff, I am growing less concerned with speed and more thoughtful about avoiding having the trailer cause me to go down.

-Rich