I too have used the fawn distress call with amazing results. I recall watching a mature doe feed on the opposite side of the field 100 + yards from my stand. It was getting dark and figured I had nothing to lose, so I hit a fawn distress tube call. That doe was under my tree in less than 2 minutes, coming in almost like she was on a string. I arrowed her at 17 yards. I've found it to work best in the early season, but personally have not had buck activity associated with the call.