Originally Posted by goran_ace
...and you really only make money on service.
^^^Did you catch that nugget? Maybe to get started you might consider "servicing" all those prospective customers with... stringing. You can do this from your home (read: no overhead), advertise at all the local courts, high schools and colleges (offer discounts to students and educate them about the importance of fresh strings and new string technology - maybe even a "coffee card" where you "string 9 racquets get your 10th free" type deal).
If you do this (or any business for that matter), just remember one thing... "The customer is KING."... without them you don't get paid. Bend over backwards to deliver quality/professional/prompt/delivered with a smile/fix it with a smile S-E-R-V-I-C-E. Remember, word-of-mouth is the BEST form of advertising.
Customer service is a lost art