My Dirt Devil Hose is too short

I like the power and simplicity of the Dirt Devil central vacuum but the hose is simply too short for our 45 foot MH. At both ends of the coach, I feel as if I will break something or pull out the hose if I keep pulling. At best, I can kind of vacuum almost to the end if I use the long wand and vacuum in that direction only. Of course there is no way to maneuver around near the ends of the coach and I can't really vacuum the front cockpit and stairs.

Does anyone have a suggestion on how to lengthen the hose? Alternatively, I guess I can either sweep or use a portable vacuum but I'm hoping there is another solution.