I save them all. Here is what I do..
I use a paint stick and a channel locks. medium size
Put the paint stick flat on the roof
Use the channel locks top torward the side glass .
Do not squeeze the chrome you want to leave the channel locks open part way.
Put the bottom jaw against the paint stick and use the top jaw to pry out using just one of the teeth on the chrome bottom edge. Start at one end and slowly work your way to another until it falls off. If you need a pick I can post one. Remember vinyl top chrome will not work on a non vinyl car correctly. It will be loose.