One final way you can avoid acting like a church planter pirate is to work hard to reduce resource dependance on your sending church as soon as possible. In short, grow up. Make it a priority to elect your own leaders, pay your own bills and staff your own ministries without having to depend on the assistance of other churches. Show them you appreciate the sacrifices they make to support you by working hard to give that support back as soon as possible.
A prolonged dependency between mother and child is an indication that something is wrong with the relationship. I remember a woman in my hometown that thought it was entirely appropriate to nurse her children until they were school age. To make matters worse, she was happy to nourish her children in very public locations around town. You could spot her breast-feeding a child half her size at the city park or at the grocery store. Her kids were old enough to hold a conversation, read simple phrases, eat a few slices of pizza in one sitting, and go to the bathroom on their own, yet they were still being breast-fed. They whole thing became a big joke, townsfolk would swap stories about the latest place they spotted her feeding her children around while the other children poked fun at the well-nourished kids she had raised. Like breast feeding, sponsoring a new church is supposed to be a relatively brief experience, just as children are expected to grow up and function on their own, so are churches. Extended periods of dependency hurt both the mother and child. The continued drain (no pun intended) on resources makes it impossible for the mother church to have more children and the new church’s extended adolescence prohibits them from becoming the mature, reproducing congregations of its own.