With experience you will start to understand racket patterns and know which holes to skip when stringing rackets. Sometimes it is still helpful to know which holes to skip,share and if the mains end on the top or bottom to help you determine if you will be stringing a one piece, around the world or two piece string job. I am configuring a 'string pattern' page on my site for helping you with just that. Check out how its getting started (currently have Babolat racket pattern info). I will be adding other manufactuers this month and hope to have the page done by the end of February. Please check it out at racketstringingtips. Patrick - USRSA MRT