This is how I do it. I benchmark everything and have a range diary. As per Ben Stoegers book. When I got serious my ElPrez was around 9s and that was comfy for me, all As. So now im aware of my limit. I know my draw times, transitions , splits etc. so I'm out on the range training ElPrez I'll shoot a few 8-9s drills. Then set my par time to 6.5, expect some Cs and Ds and God forbid some mikes. But it's teaching me what I need to see and what this pace feels like. So after a few strings of this I'll go back to my normal speed. Then I find 9s is easy to do, so now my new benchmark is 7-8. So that's all documented and I repeat the process. Now after many months 6s ElPrez for me is achievable . Then I switch up to other drills doing the same thing. I train till the wheels fall off then back it off a little. A timer is your best training buddy, it highlights all the areas you need working on. Hope this helps.