I finally sucked it up and taught myself left foot braking over labor day weekend at Grattan. I went slower during the morning sessions and spun out with a duffed 4-2 downshift but now that I got it I won't ever go back 

I think you'll still be learning LFB a couple of years from now. I made the mistake of trying it during a race and decided that it helped in T1 at Sears Point. The problem was that I hadn't done it enough for it to be an automatic response to a braking situation, and in the heat of battle a few laps later I got confused and couldn't find the brake pedal into T2 - terribly frustrating experience. Drove off the outside and into a tire wall, right foot still on the gas and left foot lost.
That was 10yrs ago, I've been LFB in the truck ever since. Felt awkward and jerky at first, but I persevered. Once I could modulate braking with the left the same as the right, I practiced handing off the braking from one foot to another during braking zones, without changing the decel rate at all. It took years before it got ingrained into my brain and I'll use the left foot automatically in panic situations.
Haven't had the balls to try it again on track, tho.