Setterguy, I can't imagine even with a sheepsfoot roller that you can compact clay and expect any kind of seal with that many rocks. There are more rocks than clay per area. I can see why you have a slow leak and why the soilfloc really can't help you much there. Too many places where rocks can move slightly and disturb the compaction and allow places for water to find its way down through the compaction zone.

Bobbss, I would go overboard on compaction or see if there is anyway to use the stickiest clay you can find, without rocks, even if you have to have it trucked in. or, plan now for an alternate source of water (well and large pump?) to help fill your pond. Perhaps you get more rain and won't have to worry as much.

Not wanting to be a spoilsport but that soil/rock mix looks to be a challenge.