Thanks to all for your help. I found both freshwater and overflow drains inside the underebelly cover. Had to remove part of it to push them back through the underbelly cover. So now all is fine, can only wait for spring to start my next adventure.
Drain Hot H2o Tank it will freeze Turn bypass valve on heater keepanti freeze out of H.W.T. also and add anti fr.to every drain and if out side shower remember it needs to drain also I blow the system with air and flush a little anty freeze also Bushman