Riders are running up on me before the turn point. I can usually exit equal or faster. Actually, the idea of adding trailbraking might be helpful to me, I haven't been doing that - it may not be the fastest way but it may help me in judging the speed or making smaller adjustments. Regarding the idea of increasing speed until it feels a little bit too fast - that is what I am trying to do, but having a little trouble judging it, so I make too big a change and blow my line, then on the next lap I am back to my original speed again.
In re-reading my OWN post, something jumped out at me - I said I could judge RPM differences better in the higher speed turns, so it occurs to me, maybe I am taking these turns in too high a gear, so the RPM is low. I only have trouble with tight turns that come after a high speed stretch, so I am dropping multiple gears. I haven't had the nifty slipper clutch so I've been a bit careful with downshifts, but I am approaching my first track day on my NEW bike, which does have one. Maybe if I can make the turn at a higher RPM I'll be more able to hear or feel a small difference in RPM, and since my next upshift point will come a lot earlier, I might be able to also use THAT to judge whether I made it through faster - I can find a reference point for when I have to upshift and if I have to keep moving it closer to the turn I'll know I am carrying more speed through. Does that makes sense?