I have almost an identical hitch system on my 25' ,1993 Excella.
I didn't personally do it , it was that way when I bought the trailer 3 years ago.
I carried 2 bikes to Alaska ,8000 miles R/T , no problem with the hitch .
I do highly recommend the style bike rack in the video, one that you can tighten down to the receiver with no wobble.
I just returned weeks ago from another 4,000 mile trip to the NW, again no problems , I don't notice any difference towing whatsoever.
I'm sure someone is going to cringe , but , I have towed a 16' RIB Zodiac with a 90hp outboard (Total about 2000lbs) with no problems. I did hold down to 60mph. Travelled about 150 miles R/T, that was on freeway and up hill ,down hill and windy 2-lanes , to Lake Mead ,NV.
I'm not recommending or suggesting you try it , but it worked for me.
My Truck is a Ram 1500
, Ecodiesel. The extra load didn't phase it.
I am ready for the flack.......