Burying the graft

I find it difficult to source trees on their own rootstock. I know I can grow from seed (and we have plenty of good threads on that), but sometimes you want a particular variety of tree to take away some of the guess work. I was gifted a Bardsay apple tree on M106 rootstock.

orginal Bardsay apple tree

source more info here
I've wanted one for a long time - it was found on a windswept Welsh island happy and healthy with nice apples, and I think it may like it here too.
I decided to bury the graft point so that it could make it's own new roots. Does anyone else do this?
I found this post:

Rene Poulin wrote:I coppice and mound layer Apple rootstocks and bury graft unions on non dwarfing rootstock to create own-root apple trees.   This gives me a tree that I can coppice if it grows too large for its space or will regrow true to type if it is coppiced by animals girdling the trunk or test winters killing the top of the tree.

So I'm thinking it ought to work. They always say don't put the graft too close to the soil or it could revert! It's sort of like layering isn't it?

I did this for several callery pears at the recommendation of a nurseryman that i bought the scions from.  This was last year and some are now waking up.  I have not dug down to see how much of the roots are growing.

I plant all of my fruit trees this way now, and it seems to cut out a lot of problems. I try to bury it by at least 3 inches or more if possible and this seems to help encourage rooting. Also I had good results on trees using a knife to remove squares of bark of the grafted variety below the soil line, to encourage rooting.

Also an interesting observation I've seen, is that almost 80% or more of the own rooted trees that I've had, is that in full sun they are extremely precocious, producing fruit on their 3rd year, so they do equal or better than most rootstock, and they grow faster so when they fruit the trees produce more fruit with the same amount of time. I have a lot of trees this year that will probably produce at least 20 fruit their first year fruiting in their 3rd growing season!