So, in between bouts of writers block I decided to start researching literary agencies in Los Angeles. This - on the web site of one of them:

.........If we like your pitch we will ask you get us a Blake Snyder Beat Sheet and Coverage from a reputable source. Thank you so much for thinking of us.

Sigh

That's what you get for going to the Blake Snyder Literary Agency INC.

Yes - their motto is you can't spell Blake Synder without B.S.