Actually the pond had water in it when I put the blocks in. Remember, I had over 4 semi's full of blocks to deal with. I had a fork lift place them in bunches of 5-6 pallets in one spot. In the evening, I would throw 2-3 pallets of blocks into the lake (I had to return all of the pallets). This formed artificial reefs starting at the water's edge and went out to the deep water. I made the reefs so that they just touched the top of the water. If there was a spot that needed more blocks, I would bring over another pallet or two. These were mostly 8" blocks but were 6" or 10" blocks.
We have a bridge to an island and we placed 25 pallets of blocks under, around and on the approaaches to this bridge. This is where we get the very best fishing.
This pond is constantly under construction. As someone wants more dirt, the pond gets bigger. This way, I am able to make reefs that eventually end up in the middle of the lake. We also have 8 small islands in this lake. Usually, at least one side of these islands has 5-10 pallets of blocks that I made for use by crayfish.