John....the only way you can get by with the double male extension
cord, is to use the twist-lock type 3 prong on the trailer....and then you
always want to plug the trailer cord in first....and then the power end.

This will eliminate the live wire problem. You could use this system if
you were careful....however, I wouldn't recommend it within a 10 mile
radius of a young boy. [X(]

Dave.