07STI,

I would highly recommend adding the bow bag for surfing, especially if you are upgrading the rear bags to 1,100's. If you were to fill the 1,100's full and have 6-7 people all sitting in the cockpit area, that is too much rear weight. You will want to add bow weight to lengthen the wave and get the bow down. With surfing it's all about finding YOUR perfect combination of length and height on a wave. I stress the YOUR part because different riders are looking for different waves. Beginners want a tall wave with tons of push for learning. More advanced riders typically want a big wave with a longer wave face for tricks. Over time you will find that perfect combination of rear and bow weight that will work best for you.