yes that will work but why not just go this route ? Dual Hitch Receiver Adapter by Apex - 2" Class III, IV | DiscountRamps.com

 

If I were to just use that the cargo rack would hit the boat when I turn, would still need to extend the tongue of the trailer. But that might be a better option than adding the receiver to the trailer.

 

Look into welding galvanized material before you do anything.

 

I'd just sleeve the inside of the tube and extend the hitch. Its just like sleeving a cage except its a square tube. You may have to make your own size of tube as it may not be a common size.

 

I'd chop it and weld in an section of square tube on the tongue there. Simple square tube, looks like it's a fairly light trailer, no reason to make it too hard. I would try to find a section of tube to sleeve the inside, going back about 6" behind where the 2 side rails tie in and about 6" forward of the front weld just to be safe. Weld that in and weld the insert section, should be more than strong enough as long as your welds are decent. I would try to flip the trailer so you could always be welding it downhand since overhead and vertical welding is not the easiest to do.

Would have some concern about rusting though, especially inside the tube. Not sure what to do about that, maybe fill it full of paint?

Nothing special about welding galvanized, just be aware that the zinc will burn off and breathing the fumes is not good - grind it off first or just make sure you have good ventilation.

 

I don't understand exactly what you're trying to do. Add a cargo carrier to your jeep, add one to the tongue of the trailer, or what? Could always add a receiver to the rear of the trailer or the front of the Jeep and leave the tongue the hell alone.

 

I want the cargo rack on the tongue. It would allow me to more easily adjust the tongue weight. Since I primarily tow with my jeep with and the springs are pretty soft in it. I don't want 500lbs of camping gear on the bumper and 250lbs of boat weight on there. If the cargo rack is on the tongue I have the ability to slide the boat back on the trailer and off load some of it's weight. I realize things don't weigh all that much. But I really hate being that guy with headlights pointed in the air when they drive down the road.

 

Id just weld a receiver hitch to the back of the boat trailer and put the rack there.
No need to mess with the tongue.

 

My boat has an outboard motor, so the receiver would stick out the back too far to feel safe. and 500lbs of cargo that far back would definitely take too much weight off the tongue.