I use parafilm. Swelling buds easily push through 1 or 2 layers.

No need to worry about protecting the grafts through the winter. Wrapping it well for the first two weeks to keep it from drying out while it is taking is all that is necessary or even possible.

Also as stated parafilm is great for grafting as it gives a good seal and does not need to be removed by you as the plant can easily overcome it plus it breaks down due to sunlight. When I was T-budding in 100 degree wx the parpafilm that was in direct sun was falling apart in one week. But it was enough, all the graft pieces were green and seem to have taken. So now just making sure the neighbor kids keep their basket ball on their side of the fence

i have heard that it will take or not in a day or two.
john s
pdx or