Can we travel with fresh tank full? We lose half on the way.

I ran my vent tube out the bottom of my trailer (due to the design of trailer - not a standard setup). I have a ball valve on it, so I can close it after I fill my tank, and don't lose a drop on the road. When I arrive, I open the valve, just as part of my setup process. I am down there to lower the stabilizer, and at the same time I open my vent.

Never a problem, and always have all my water when I arrive.