I always forget to take pictures of my crazy methods.
Longer tanks are harder to move than taller tanks.
My advice is drain 60% of the water or more, plastic wrap the top, plastic wrap the HoB filter(water still in it) and plastic wrap the lid onto the tank if there is one.
Wrap a towel around whatever you are transporting, then put it in some type of box/bin. I do Sterlite containers. They work well for me.
I'm always amazed at how well my Fluval spec transports. If I was going to permanently travel in my life and never own a place for more than a few months at a time, all my tanks would be specs.
Here's a pic of how I move my spec + my 1gal tank. They both go in there.