Yes, I am double apexing turn 1. It lines you up for a better and earlier drive for the fastest part of the track. Watching the video, that's where I need to find my time is from turn 10 to turn 3. More specifically I need to work out a better drive out of 11. A better entry into 13 and a better drive out of 1. There are times when I did each of those well but I haven't put them together yet.
Greg I see where you can pick up some both in 10 and in 13. If you adjust your line by going in deeper into 9 do a very late apex on it and stay tight coming out of 9 towards 10. There is a big black spot in 9 which does not appear until very late in the corner, you want to try to be between it and the edge of the track. This allows you to come into 10 and 11 with a better line and harder drive out. For 10 there is a spot right near the red meatball sign. apex 10 there again being between it and the edge of the track. Both spots are black and noticeable once you look for them. You can see it in your video around the 7:06 time mark. That lap you were almost spot on with it through there. As for 13, from watching your video it looks like you need to simply run deeper into 13 as well. It will let you have a better line through 13 and 14 and gives you a hellava drive onto the front straight. Hope this helps brother.