The axle does not even get close to dragging when on 3 wheels. Both are torsion axles and both are welded to the frame. Doesn't even look like it's stressing it... I might try it. It is about 35 miles. I just wanted to see if anyone had done this, obviously not ideal but wanted to see if it's a total no no. I know my 20 foot Blazer isn't that heavy. You could get it from the factory with a single axle. So I don't think weight will be an issue...
Triton Tr20 - 225 Optimax
Bullet 20DC - Merc 225x