I have built a ramp so I can get mine in from either side door, there is also a bulkhead (ply sheet) between machine and seats and a mini bulkhead (MDF sheet) between machine and rest of van. I have also screwed some skirting to the floor, front and back of the machine so that when I push the machine up the ramp, over one skirt the machine sit snuggly between the skirting, no need for any straps or bungies.
Chris