I do a slow tug at 1k rpm and it seems to work. The clutch in my car judders like an SOB, and I've found that not putting much of a load on it negates a lot of it.
Ironically though, slipping it at 2k rpms works well too, but I just cringe when I do that...but I'm a bit of a clutch-o-phobe. I hate slipping clutches.
