After looking at many posts on structure we built these and will sink today.

I sure hope it is not overkill. Next will be homemade CC caves and several rock piles from concret block. I seen 2 buckets attached together mouth to mouth with a round hole on one end. Any ideas out there?

C00L

How deep of water are the "pallet-brush-piles" going in?

Between 10 and 17 feet I hope. I was going to scatter around the pond, but decided to put in area of the dock for fishing. I'll put the CC caves on the other end of the pond. I am thinking the CC will also use the bottom part of the two pallets.

If you want cover for CC to spawn in, a cleaned out plastic 55 gal barrel with a good sized hole cut in one end will work as well. Place in 3' or so of water.

That wasn't pretty. Three hours to sink one. Did not realize that they would flip with a 50 pound bag of comcret in the middle. But flip it did even with 2 blocks in it. Now back to the drawing board for plan C since A & B did not work.

I wish I would have seen them first. I could have told you it is going to take a lot of weight to sink pallets. I make inverted Ts out of 2 pallets like this ( _l_ ). It takes about 100 lbs to sink one. One way to do it over time is to drive a post into the pond bottom . Put about 50 lbs of concrete tied to the bottom then tie the top to the post. After about 3 mths it will water log and you can cut it lose from the post and lower it to the bottom.

how long will these last under water untill they fall apart

Are they Oak or Pine?

Most of them are OAK with a few SOD Pallets which I think used pine. I have no idea how long will last, but anythig has to be better than nothing. As it stands now it is just a deep hole in the ground with a couple Christmas trees.

I'm pretty sure Oak will last a lot longer under water than Pine, but I guess it really depends on the fastners that are holding the pieces of wood together.

Plan C. Mission accomplished.

Adding one more photo. Now we are putting in concret blocks to make rock piles

I have pallet structures in good shape after 10 years.

How much weight did it take to sink one?