@coleAK, I assume your bumper is welded through the frame, not just tacked on? Bikes bounce the trailer a lot when hanging off the back, and I've seen photos of bumpers breaking free if the hitch is just bolted to it.
I've been considering one of these to mount over the trailer tongue. I can get the 3 kids bikes in the rear storage area in my Lance, but right now I'm just throwing a blanket over the bed and bungee-ing our 2 adult bikes to it.
https://www.amazon.com/STROMBER-CC275-Bike-Rack-Trailer/dp/B01IC61QYC
and
https://www.amazon.com/dp/B0001VO1YY/
My main concerns with this are additional tongue weight (which i think I can handle) and reduced clearance when turning (I'd hate for the bikes to hit the D pillars on the LC).