Tip # 2 for 2014 is to learn how to relax and let Double Unders come naturally.
Your natural ability to do anything comes from a state of confidence. When you are confident you are doing things without much tension. Choosing to do singles during a WOD is a confident move because you are comfortable with the movement.
Choosing not to attempt any Double Unders at all is a sign of doubt in your ability to reach a level of mastery. Choosing not to practice for a few minutes before and after the WOD is showing you do not care enough to take yourself to the next level in your jump rope skills.
We all know that the right practice does make almost perfect any skill you want to improve. Regardless of where you currently see yourself you must choose to improve by your actions.
I have coached individuals with obvious talent and ability shy away from Double Unders because they are ashamed and frustrated that it is taking so long to reach a mastery level. Unbeknownst to them the reasons it is taking so long in the first place is their attitude.
So Be relaxed and let your mind and body come together in its own time. Let your frustrations go as quickly as they come. Double Unders is literally childs play; continue to play, daily if you can, until you can go unbroken to 50 every single time.
2014 is the year you get to 50