Thank you to RAH, Rainman, TGW1, and BrianL. I will definitely leave just a couple of the 18" root balls in tact, to place in the bowl after the pond is complete. It's the other hundred or so stumps that I have to decide what to do with. The operator of this Rayco stumper claims he can run that chipper right down into the ground quite deep - Just hoping someone else who has used one of these can confirm if that truly is common practice or not. I don't mind paying a little more for an extra piece of equipment if I don't have the hassle of burning stumps, or having to look at a massive pile of them sitting behind my dam.

I'll sit tight, and hope a few more jump on here with their two cents...

Thanks again, in advance. And as this whole process continues, I will update.

Bordersgent