I suggest that you measure things and do the math.
Adding 260 lbs to the back means that you will have to add more than that much inside the trailer ahead of the axle
to maintain a 10% hitch weight. And, when you look at the frame under a Scamp
you will see why no amount of reinforcing, short of almost a new frame (meaning even more weight) will support your bike that will weigh about 600 lbs every time you hit a good bump.
In any event, adding another 260 lbs to a SCAMP
is yet another load to much...