Why would you want to drive to work to string rackets and do other duties required by the part time job probably for minimum wage? Why would you want to string for your prospective customers somewhere else? If your friends who do not know you string rackets see you in a store stringing rackets will they start coming to you directly on the side? Sounds like a conflict of interest to me. Seems like you would be better off starting a part time business and attracting your competitor's customers.
I love stringing racquets, believe it or not. Sometimes when I'm bored, or have a big match the next day, I'll cut strings out of one of my frames that only have a couple hours of play time on them, just for an excuse to restring.
I love the act of it and take stringing very seriously. I really enjoy having conversations with my teammates and personal customers to find out the best string and tension combination. I listen to their issues almost always have solutions through changing of string types and tensions.
As much as I enjoy the act of stringing, I can't seem to grow my customer base. Obviously I would prefer to not work in a pro shop and just increase my customer base, but I can't figure that out. If I can't bring in more customers, then I'm forced to go out to a pro shop and work there instead. Either way, I'm making money. And, I'd probably make more money at a pro shop anyway, since I don't charge much for my string jobs. My stringing fees are only $10. The average string job that I charge for is $20 which includes the cost of strings, since I provide them.
Perhaps another reason why I don't have a lot of customers is because I don't have a large selection of strings in stock. I only have 6 reels of string and about 35 packs of individual strings. Most pro shops have hundreds of types of string to choose from.
Lastly, I may be living in a bubble and completely out of touch, but I feel like I take stringing more seriously than virtually anyone that works for a local "pro" shop. I think those people probably just string as if they're on an assembly line, kicking out as many frames as possible, not too concerned with things such as accuracy, consistency, and customer's wishes. I think that if I work for a local "pro" shop, they'd gain a much better stringer on their staff, which would make their customers more happy and increase business.
Anyway, thanks for everyone's thoughts, appreciate it.