The problem with a bumper pull trailer is that if you get passed on the interstate or other multi-lane road by a semi or even a regular passenger vehicle going significantly faster than you, you're going to get sucked over towards their lane and start to wobble back and forth.
I've been looking at a Hensley Arrow anti-sway hitch. People who do more bumper pulling than I do swear by them. They're supposed to be the best anti-sway hitch in the known universe. I've never pulled the trigger though because the pricing starts at around $2500 just for the hitch.
Hensley Mfg.The Hensley Hitch is the only hitch on the market guaranteed to Eliminate Trailer Sway. The Hensley Hitch starts at $2320 reconditioned when available. Call us for our current promotions on a new hitch. Call about our Bundle Promotions. Call 1-800-410-6580 for details. This is the original Hensley Arrow, the only hitch guaranteed to eliminate trailer sway. Other sway control hitches only dampen sway, because they use friction to control trailer sway. At Hensley Mfg., we're not interested in trailer sway control, we're interested in trailer sway elimination! Rated for travel trailers up to 14,000lbs., the Hensley Arrow will be the last sway control hitch you'll ever own. And 100% GUARANTEED to ELIMINATE TRAILER SWAY. 60 Day Money Back Guarantee and a Lifetime Warranty.NO ONLINE ORDERS. Please call 1-800-410-6580 to determine which model is right for you.
https://hensleymfg.com/product/hensley-arrow-anti-sway-trailer-hitch/