Usefull little trick i discovered that greatly improves the strike rate , on thicker and hollow cored stems use a short section of plastic straw as an internal splint , if accurately cut and taped around , over 50% will take.
The last three i did made it into mid flower , tops were a local WW and the rootstock was C99 males that had been deleafed by catterpillers , they only failed after six weeks when the tissue broke alongside the graft as the weight piled on.
The leaf nodes on the male rootstock below the graft produced male structures that looked functional till cut off , sure they would have seeded if left.
The last three i did made it into mid flower , tops were a local WW and the rootstock was C99 males that had been deleafed by catterpillers , they only failed after six weeks when the tissue broke alongside the graft as the weight piled on.
The leaf nodes on the male rootstock below the graft produced male structures that looked functional till cut off , sure they would have seeded if left.