Pond Boss Forums INTRO Questions & Observations Deep question from a shallow place

I have felled a pine tree into the pond that, unfortunately, didn't reach all the way into deep water. Normal pool depth only 18 inches at the end, too shallow for anything other than small fish.

My thought is to dredge or scoop the area around the tree to a depth of maybe six feet or so, allowing larger LMB to use it as cover & creating an instant hot fishing spot.

Q: How deep is sufficient for this purpose? Should I create a channel that reaches out to deeper water, or would simply dredging around the tree suffice to draw in larger LMB?

Any input would be appreciated!