The problem with EOL's in low inertia helicopters like the R22 is that there is no half way house in terms of practice. As instructors and examiners, you either do them all day, every day as I used to or none at all. No two autos to the ground on the same day same conditions finish up exactly the same. Tiny variations in wind and flare make large differences to what happens at the bottom. There is no one size fits all technique that you can get away with like on 47's, 300's and 206's. Lack of practice ends in tears.