Deep Sea Fishing

Options
Has anyone gone deep sea fishing and wore an HRM? I'm going this weekend and I'm curious how many calories it burns. I've been before and know that between balancing while the boat bounces around and reeling in ginormous fish you do definately get a workout but I don't know exactly how many calories are burnt. I looked at a couple of website that say for 3 hours of fishing i'm looking at 360-450 calories.... Does that sound right?