Like DLD I prefer to be in the 70-85% area, but I jelq at all levels. While it is great if you can keep a particular erection level while jelqing, but many guys start hard and get soft, and others just the opposite. I tell people to not worry about how erect they are if they drift while jelqing. Go with the flow, which is better than constantly stopping and starting while trying to get to a particular level. I find for myself that the hornier I am the harder I am while jelqing, but if momma and I have been hitting it a lot, I find my erection level lower when getting into my routine. Also, and this is critical, technique beats the hell out of erection level. Make sure you know how to jelq properly, and don't get lazy while doing them.