Thats a good idea.....
I got her packed up the best I can with a solid 24" clay from the clay layer up to grade in 2 separate lifts. Before the reworking of the banks it leaked quite a bit in quite a few spots and now thats not happening so hopefully its fine.
All thats left is to wait for it to fill.
Now on to the next batch of questions.......
Thanks for all of the great input on this.