Just wanted to show some progress on this mod, its a long time coming. I have a very deep boat, so it really helped me make this possible. I fish alot of tournaments, and added a 100 gallon cattle tank to my boat. Am actually building it under my front deck. This baby will hold anything I will ever catch I can tell ya that lol.... I have actually had the tank for a long time now, the first time I actually just had a large piece of plywood cut to shape, sitting on top of the livewell. Horrible design, was just doing what I could to get by for a while. I am actually taking the time to do it right this time. I am building the frame off the tank, in the pics you can see the progress I made today. Now the wood on top is being pulled down to the sub floor. there was still some wood down there to work with, this way the tank cannot move, its pretty much boxed in, and the wood on top of the tank is being pulled down by braces I have screwed to the floor. The good thing is that I hardley had to drill into any aluminum at all. There are 2 layers of weather stripping underneath the plywood, around the rim of the tank. Now that it's sealed, I wont have to take a bath on shad/catfish water anymore while running down river.. In these pics you will see just the beginning. There are 3 lines going to the livewell. One is the fill, I tapped into the existing livewell fill line that was original on the boat. Another is the aerator. Its a flowrite fitting that I had to mod to fit into the side of the tank. They are designed to sitting vertical, but I was able to modify a horizontal fitting and get the same effect. And the 3rd line is basically an exhaust, that way ammonia and other gases that build up can escape without having to keep the lid open. That line runs to a through hull fitting thats on the front of the boat, right next to my boat numbers, but plenty high enough to never go below the water line. To drain the tank I tapped into the original livewell drain line, converted it to one line, and installed a larger fitting so it just takes a standard drain plug. Just pull the plug and she drains right out.