I dug out all the foam on the back of the tank all the way to the bottom so I could get a cargo strap underneath it. I then used a 26" hand saw to cut the foam the full length of the tank down to the hull to relieve the pressure away from the tank. I then attached a cargo strap on the tank and a rope around my hardtop. I then attached a come along between the cargo strap and rope and started to put steady pressure on it. I continued to cut the foam to relieve the pressure and the hold it had on the tank (having a hardtop on my boat made it a easier). I also used a few wood wedges that I placed at the bottom back of the tank and would alternate the pressure on the come along and driving the wedges further under the tank to get it moving upward. This was more tedious than the pictures made it look. It took me a solid 10-12 hours over the course of two days to get it done, but I was working it alone. If you don't have a hardtop you can use a 4x4 the width of your boat as the anchor for the come along.