Truck Bed Tops How To Transport Couch In Back Of Short-bed Truck?

How to transport couch in back of short-bed truck? - truck bed tops

We want to round a sofa from IKEA, which is about 70 "and the bed of the truck for sale (with the back) to bottom, is about 85". It is customary to hold back, but if the tape up and down with the back (so it's not just slip out). Is it safe to drive, even on the road with him? It is not safe. Thanks for the suggestions.