take a crack at vs take a flyer

take a crack at

verb
  • To attempt or try. 

take a flyer

verb
  • To make a choice with an uncertain outcome; to take a chance. 

  • To invest against odds. 

  • Used other than figuratively or idiomatically: see take, flyer. 

How often have the words take a crack at and take a flyer occurred in a corpus of books? (source: Google Ngram Viewer )