Okay, okay, I don't know how to put on a bra!

I do know how to take them off though!

I bought a used fairing bra or "nose mask" for my Interstate. I can't find any instructions but you wouldn't think I'd need any! However, apparently that's not the case.
First, It has a couple of elastic cords on either end with plastic hooks. What do they hook to?
Second, I looked at a friends installation and found a surprise. His setup has a 12" long Velcro fastener that wraps around the bottom of the fairing where the clear plastic fairing wind deflectors are. (His have been removed as he has Baker Air Wings.) I don't have this Velcro piece at all and my nose mask is a bit loose right in that area. I looked for extra stitching that would have given away that these Velcro strips had been added but it all looks factory. So, which is factory? Could there have been more than one model?