I'm about 6'1" and 220, having fattened up for the winter. I exercise every day, but I find myself getting a lot hungrier this time of year.
Try kayaking. These can be rented for a decent price, and if you make friends with a fellow paddler, (s)he'll probably let you borrow his/her boat in the future. You only wind up burning about 400 kCal per hour, which might be half the rate of a hard bike ride, but it's still not bad. It's fun, it's a distraction, it connects you with your local waterways in a very intimate manner, gets you close to the wildlife, etc ... and gives you something to do other than eating. Plus, it works on upper body strength ( mostly your back if you're doing it right ) which a lot of cyclists can use help in.
Also, go for walks. See if you can spare 30 minutes, although 60 is ideal, to stroll around your neighborhood. You're only burning 200 to 300 kCal/hr this way, but again it's relaxing and it keeps you from eating.