It was over 7 minutes before I got out of the water. I had a splitting headache due to lack of oxygen and almost passed out a few times. No, I wasn't under water for 7 minutes, but I was fighting rapids and got short breaths before water filled my mouth. The rapids were heavy enough that the people in my boat couldn't find me for the first 4.5 minutes. Then they saw me, but it was a struggle against the current to get to me. They ended up waiting for me to get through it all to a calmer point before pulling me out.