Monkey Bars Bike Storage Rack, Stores 3 Bikes by Monkey Bar Storage

If I want to get a bike in the middle, do I have to remove the other bikes to the left or right of it before accessing?

Can you tell me what height off the floor is best for a standard-sized bike? Do the hooks bind the spokes and damange them?

Would it be possible to put screws into the hooks so that they were permantly mounted and fixed in place on the bar?

Does it work for road bikes as well?