I own 3 weeks on Sanibel/Captiva. 1 at Hurricane House which is my favorite, 2 at Plantation Beach Club at South Seas on Captiva. I would think South Seas would be fairly easy to trade into because it is so large. If you are interested in renting, the Chamber of Commerce could send you info, plus put your name on a list they give their members and you would get mailings from everything to motels, condos, and private homes. We have been going to San/Cap for 29 years and love it. If I were renting I would look for a place on West Gulf Drive, the shelling is better and the beach is not crowded.