Either this Tiny scions - #31 by Tana , or rather more like this
if the scion is very thin - this has worked even on a Conference pear in a very windy location and that crazy thing grows like magic beans and bears fruit in clusters large enough to break branches at shoulders if we don’t thin it soon enough. I also use vigorous seedling rootstock in windy locations, so the union swells with new tissue and is likely the stronger link in the chain, so to speak.
If the scion is a regular pencil size or slightly thinner, then normal wedge just aligning cambium on one side only. (pushed in so deep it would seem like no wrapping was necessary if it were not for the blasted windy weather
)