Neil
I've monkeyed around with them for 10 minutes and even tried doubling them up. No dice. The OTB laces are flat, thin and slick. The locks just can't seem to get a bite. I understand why they come untied easily.

I know DD and I think Jimbo (I could be mistaken on the latter) are using them but I can give mine a tug and they slide up. I am thinking round laces that are shorter so I don't have any excess material flopping about. I bet that would be the ticket.