Greeting all. I am about to do my first XC race in a couple of weeks. It is the Sea Otter classic XC course..19 miles. I live out here and have ridden the course a couple of times, but have never raced. I usually use a camel back when racing, but I never see many of the pro's wearing them. Is it not a good idea? My plan is to just finish but faster than the training rides I have completed. Any suggestions are welcome..