oak in the wild

I'd consider air layering it.

JT MKBonsai

@Vlad - the taproot serves as you stated, for both water supply and for anchoring. In areas with hot & dry summers, the tap root likely is the tree's main source of water during the dry season. If you cut the tap root the year before digging the tree, it might be necessary to go to the tree and water the surface roots every week you don't get rain during the summer. The water will keep the surface roots and the tree alive. If the tree in not easily to get to, making supplementing water in a dry season impossible, the multi-year collecting technique is not practical. You got to work with the climate you have. The original poster Curts83 is in an area where usually they get rain at least once a week through the summer.

@ Curts83
That is a nice trunk with good movement and nice bark. Hell yes, I'd try to collect that if possible.