I can consistently get inside 5 feet but difficult to get it in the hole.
On fast greens, I aim well left at the tree off the green and hit it a couple of clicks early. If you are playing safe I hit it 62 feet on the meter, if I'm trying to make it I go 66 feet on the meter. Saw it made yesterday with a putter and a wedge. I don't use the wedge shot, don't think that is sporting in a putting challenge.
I have yet to make it but it can be done as I witnessed it.