I think that it would be nice of you to give an illustration as to how 6 bikes would fit in this rack. I was told three from the front and three from the back but the opening slips do not seem to accommodate this. The rack is not very sturdy since it has a curved stabilizer stand only on one side. I really do not know how user friendly this will be until it is being used.
My fault for buying an inexpensive bike rack. Does it work? Yes. But it would be best for home use only. I mean to use it in front of a business but it is very light weight and could easily be taken apart and bikes stolen. For home us it will work just fine.
I found the rack difficult to tighten appropriately. I sold it last year when I downsized my bike collection, as I no longer needed the rack. This rack is best for personal use and is too flimsy for business use outside on the street by a storefront.