Looking for any experience, thoughts or advise on where to splash my 36' trawler as close to the Mississippi River from Seattle to embark on the Great Loop journey. Planning to do this trip starting September and wanting to ship the boat as economical as possible. I know many have moved their boats from the PNW over transport east. Any suggestions on where to enter the river systems during the Fall season? Does Sioux City or Minneapolis make sense, and are they navigable to the Loop? Any discussion much appreciated.