[jorgeinmiami]

I did something similar on my 20 (which I sold and regret)I placed the tank under the leaning post, but instead of a transom mount pump mine was thru hull with the discharge also thru hull. What I did do is to install 2 gas fills right behind the tank where I could attach the in and out hoses that way when I was not fishing I couls remove the tank and use a cooler I wish I had pics but I don't.

I worked out pretty well