The important part is the tongue weight. Reason it doubles is because the WDH is transferring some of it to the front axle. The entire reason is to level the tow vehicle so it has equal traction as if it were empty. If its a FWD then you lose traction and steering if you drop 450 pounds on the ball without transferring weight. Dangerous and potentially deadly.
If its AWD, only 30% of the torque is given to the rear wheels, with the same result of loss of steering and possibly overheating the PTU and RDU Clutch.
If you can't use a WDH on the trailer, pack it very light and make sure it is not tail heavy, or you are setting yourself up for sway, which is not good at all. Keep in mind as well, anything behind the back of the front seats is also added to the rear axle and anything behind the axle is added to the tongue weight.
Use a commercial scale with and without the trailer and check the weights, as long as you aren't nose high, measure the top of the wheel wells before and after to compare, you should be OK to tow it.
If it is nose high that is quite obvious, DON'T.
If its AWD, only 30% of the torque is given to the rear wheels, with the same result of loss of steering and possibly overheating the PTU and RDU Clutch.
If you can't use a WDH on the trailer, pack it very light and make sure it is not tail heavy, or you are setting yourself up for sway, which is not good at all. Keep in mind as well, anything behind the back of the front seats is also added to the rear axle and anything behind the axle is added to the tongue weight.
Use a commercial scale with and without the trailer and check the weights, as long as you aren't nose high, measure the top of the wheel wells before and after to compare, you should be OK to tow it.
If it is nose high that is quite obvious, DON'T.