That blue clay if it's wet is slicker than owl you know what. I'd stockpile the blue clay and use it to pack in the areas that don't hold water that well. Do a bucket test to see how well the soil in a particular area will hold water.

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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).