Where to put generator in 21' travel trailer

I have done this project myself of putting a Champion 2800 inverter generator and two batteries on the ends of the bumper on the rear of a 26 foot travel trailer. A couple of concerns: 1. the 4" bumpers are designed to carry 4" sewer hoses, most of the 4" bumpers are not even welded the full width of the bumper to the frame. I had a welder finish welding it and he put 2X2 inch steel on each side of the I frame and welded it to the bumper. I read an article that just a bike carrier mounted to the bumpers have wiggled so much that it tears the bumper off without attention to it. Number 2. You need to look up an article on You Tube about sway control while pulling a trailer. The correct article shows a model car and trailer on a tread mill. I have yet to figure out how to calm the fish tailing down of the trailer. I have found that if I keep my Suburban full of fuel or extra 5 gallon water cans it helps. I have one sway bar and I am adding a second one and a mud flap across the bumper of the suburban to keep air from flowing under the trailer. The bottom of the trailer has corrugated plastic like for sale signs are made of and acts as an airplane wing lifting the trailer therefore sway starts at 65 mph. I have a unique design incorporating a Harbor Freight shelf and three bolt on 2x2 hitch receivers! If you are interested in seeing photos let me know.