Did you outline your book, or do you write from the hip? I ended up querying a lot of agents I had never heard of, but as long as they repped my genre they were fair game.
But about a year and a half ago I decided to go all in.
Did you tailor each query to the specific agent, and if so, how?.
I also participated in Twitter pitch contests.
In other words, a really long time! Seriously pounding the keys for ten years—but dabbled and goofed around for probably ten years prior to that.
On what criteria did you select the agents you queried? An Interview with Lisa Moore Ramee upon receiving an offer of representation.