If you mounted aero bars on your bike for comfort and speed on long rides, remember that they aren't welcome in most pacelines. Riding in close proximity to others with your hands on the aero bars is dangerous because this position is usually less steady, and your hands are far from the brakes in case of an emergency. Either take the aero bars off for the group ride or assure your riding companions that you won't use them. Riding with Mirrors You've probably seen other riders using a mirror, attached either to their helmet, glasses, or the bike itself. Mirrors are usually shunned by racers for reasons of tradition but they're extremely useful for checking behind you for traffic and keeping an eye on riding companions.
Adjustment is critical, especially for helmet and eyewear-mounted models.
Experiment in a safe parking lot until you get it right. Among the advantages of clipless are an absence of straps, which can cut off circulation to your toes, and clips which can chafe and irritate the ends of your toes. Also, clipless pedals are easier to enter and exit, once you learn the technique. After a few minutes of practice clipping in and out in a parking lot or a grassy field, the motion will be automatic. Finally, clipless pedals are safer in the event of a crash.