Rock piles are great! Crawdads and little fish can hide in them and big fish hunt them and suspend on them. For us we just make sure they are deep enough not to bother swimmers if anyone swims in the pond.

Here is one we put in our big pond two years ago when we dug it, a single load with a dump truck about 18 tons. Now I wish we had put two or three piles in.



[Linked Image from i.imgur.com]