I have never been diving with double tanks, I would like to see some of the deeper wrecks in the great lakes where I live. I am very concerned about the weight of 2 tanks and my ability to carry this weight. being only 5'5" at 135lbs I fear the worst. Can anyone give me a way I can dive the wrecks without totally killing myself with all the weight involved. I currently only dive the inland MI lakes single tank, and in the tropics. But I want to make the most out of the short summers we have, and as always I want to improve my skills and learn more.