What's the key to a good blast double?
I'm assuming that it's in the set up.

A lot of people on my team try to tell me blast doubles on work on JV kids, or crappy varsity kids, but I know that's not true. Jordan Burroughs hits it all the time and many others do. Obviously it's not going to work if you don't have a set up and just shoot in.

Fakes and head taps are probably good set ups. Its more of an outside shot, right? If not, what is/are some good set ups for it?
Where do you want their weight when you shoot a blast double?