With that much weight? Definitely. I assume you're talking about that strange surging feeling as you pedal. Careful with your speeds. My cheapie trailer tried to come around front when I tested a panic stop.

You might consider redoing the rails to be higher than the wheels, you could carry something wider than the trailer that way. I had one load that I wished I had that feature, I ended up using trash I found behind the store to prop the load up, not exactly stable.