I drink a few while kayak fishing, and i keep it at a few. Although, I flipped my yak in the pass a few months back just after I opened beer #1. The boater that stopped to assist me probably thought I was a drunk because he saw a beer can floating next to me... Truth is I caught a wake when I was reaching behind me to put my rod in the holder. It just goes to show you that you never know what's gonna happen. Use common sense, know your threshold and you'll be fine. I personally find it very relaxing sitting in the gulf in my yak and having a beer.