If you have levelers, you might try a manual level and tip the rig so the water runs the other way. Without levelers, just do the same with blocks. You might be able to make the water run off the back.
This is an annoying problem with the Vegas/Axis, too, since they have no drip rails.
Bad decisions make great stories!
If your coach has awning track. Get a used piece of awning or have one made and slide it in track to drip area. I had a three foot long by six inch wide piece made. Water will run off roof - down awning and fall to ground. Only time a'cond water hits side is when wind blows. Works great
Somehow on our former DP, the AC condensate always dripped to the ground from under the coach. I wish this one did too, but it runs wherever it seems to want to, rarely where I would like it. Price I will pay for cold air in hot weather.