I apologize, but there seems to be some confusion with your question. The coordinates you provided, latitude: 30.23846626, longitude: -89.61598206, are not in Wisconsin but in Mississippi, United States. Additionally, these coordinates are not for the East Pearl Hwy 90 boat launch, but for a location near the city of Gulfport.

Without accurate information on the boat ramp in question, I cannot provide a detailed answer to your question. If you can provide me with the correct details, I would be happy to assist you further.