What is the appeal of a Slingshot?

So, I'm curious - what is the big draw to a Slingshot? I've heard about its potential to deliver quick, powerful returns in the cryptocurrency world, but I'm still not entirely clear on how it works or why people are so into it. Is it simply a matter of buying low and selling high, or is there more to it than that? Can you break it down for me and explain the allure of this investment strategy?