Uhhh well... yes, you can do it. Is it really just as simple as what is shown? Physically yes, design wise no. You are screwing with literally everything.
is a fulcrum. The weight of the RV on either side of the pivot point (axle) is balanced at the factory. And the downward pressure of Scamp
19 rv tow hitch is intended to press down directly over the drive axle
of the tow vehicle NOT on a bumper hitch mount.
BTW the drive axles of the tow vehicle is also a fulcrum. Weight applied downwards on the tow ball is pushing up on everything forwards of the drive axle. Which means the steer tires
get lighter as you push down on the ball. This does not occur if you place the pressure directly on the drive axle as designed. This gives the Scamp designers freedom to apply much more weight downwards on the tow ball in the bed of the truck because all they are doing is applying a load into the bed of the truck.
So you completely mess with the tongue weight of the scamp by sliding the ball forwards, plus it was never intended to press down on a bumper hitch ball, so what is the result? Are you doing an engineering analysis of the resulting forces? On what happens to the downwards pressure on the steer tires
And then you are going to start loading the new "free space" with bicycles, and God knows what else, applying yet more down force onto the tow ball.
Yea, no problem...
Let's say that I personally wouldn't touch this with a ten foot pole. And if the first law enforcement officer to pass you doesn't instantly write you a ticket and place you out of service, (s)he needs to be fired. And BTW (s)he can place you out of service, forcing you to get it towed somewhere.
Good luck with all that.