#1 reason writers say they can't get an agent: Can't get in the door.
#1 reason agents say they won't take on a writer: Writing they can't sell.
Quarry, I bet you find this whole thing frustrating. Me too. But, there are thousands of writers just like us, with award winning scripts in hand. The way into the industry is not by pounding on doors. The people inside will not answer. They look for new talent (like yours) via certain very specific avenues. You must play by their rules, it's as simple as that. But the good news is
you already hold the key to open those doors yourself; a brilliantly written, marketable screenplay. Quarry, this is the key and you already have it in your hands.
Congratulations.
So now that you have the key, how to use it?
Without industry cred', virtually no production exec would ever assign someone to cover your script.
Credibility comes from having someone in your corner that the execs already know, usually an agent, or a manager. In order to get an agent, you need to get them to read your work. Here again, you need credibility.
Some ways writers build credibility:
1) A reputation of excellent writing & making large deals.
2) Win a major writing contest.
3) Make a few deals writing some indies, and work your way up.
4) You've optioned the film rights to a New York Times Best Seller and have attached yourself to write the screenplay.
5) A Studio exec wants to make a deal with you, and you need a agent to negotiate it.
6) You got a RECOMMEND from a resepected script coverage service.
7) Knocked them dead at a pitchfest
Wrote a fantastic query letter and matched your marketable script to a small boutique management company that works in your genre.
As a start, I suggest you tackle #2, 3, 6, 7, 8.
I repeat, you already hold the key to the doors, but now the journey begins. Please keep us posted on your results. I'm inspired by your confidence and motivation.
Thomas