At our par three 6th hole I hit my tee shot into the semi-rough just to the right of the green. We didn't expect to have any trouble finding it, but when we walked up there it was nowhere to be seen. After a few minutes of searching I found it by treading on it. It had embedded itself right into the rather soft ground! We have the Local Winter Rule that allows relief from from an embedded ball through the green. As I was entitled to a free drop anyway, should I have been penalised for treading on it? Only a friendly game by the way, but what would be the case in a formal competition?