We ran the Dickinson continuously for three days while hiding from a 60+ knot storm in Northeast Harbor and had zero problems despite gusts that heeled the boat more than 20 degrees. On the Dickinson the exhaust stack is the inner stack. The input air comes down the outer, concentric, stack. We have had zero back draft problems despite the short stack. The only issue so far with the deck fitting for the stack happened when a line snagged on it. That required replacing the fitting.