I just went through a similiar situation. I moved a 65 gallon to make room for a new 125 gallon. My tanks are on carpet, so sliding them was not an option in my opinion.
I drained the tank into a large rubbermaid can, got some friends to help me move it (about 30 feet away) - put a submersible pump into the bottom of the rubbermaid, and filled it up as much as possible, topped it off with fresh water.
It was a successful move, fish and tank survived! Hope this helps.