IF you remove all but 1 leaf, Apply 0.3% IBA (Rooting hormone) mist the cutting then it will probably root.

My uncle who has numerous grape vines says that muscadines won't root but I've been told that something won't root before and lo and behold, I got roots. I rooted some grapes but taking a small cutting, dipping in rooting hormone, sticking it in a small plastic cup, placing that cup in a zip lock storage baggie, misting and sealing up till I saw roots in the cup.