When we needed to get our ski boat winterized last winter, we left it until the last possible moment and then had to scramble to find someone who would do it immediately.
I called every boat facility in the St. Louis area and the Fishin' Hole was the only company that would squeeze us in. As they said, they know that people need this service during the fall and they always have time for their customers.
I was able to get my boat in immediately and they fogged the engine, stablized the fuel and made sure that all of the fluids were at the proper levels for winter. After changing the oil, the boat was good to go and safe for the winter.
By squeezing us in when no one else would even talk to us, the Fishin' Hole guaranteed themselves repeat customers.