Overheard in a gearshop
"I'm going to climb Rainier this weekend. How many pickets do I need?"
"Well, do you know how to make a snow anchor?"
"No."
"Then you don't need any pickets"
You've got plenty of time to figure out crevasse rescue between now and summertime. Hire a guide to show you, or take a class, or just grab a book and practice off your porch until everything works.