Humping Tera Heart Inflatable Sexdoll inflated with air and water on a water-bed

So, I decided to try fucking a water-filled inflatable doll on a waterbed. Not bad, though I only half-filled it with water and the rest was air. She was a bit heavy to move, but I kinda want to do it again except fill her all the way up with water. Just need to get a container and pump so I can fill my inflatables easier…