Sukkah 22 - July 29, 20 Av

Pictures A month of shiurim are dedicated by Terri Krivosha for a refuah shleima for her beloved husband, Rabbi Hayim Herring, Hayim ben Feiga Riva.  A sukkah medublelet is a good sukkah. What is medublelet? Rav and Shmuel disagree. According to Shmuel it works by the principle chevot rami. What is that principle? Where else do we see it? There is a debate about whether or not the rows need to be within 3 handbreadths of each other in order for it to work. The mishna said that if there is more sun than shade, the sukkah is kosher. How does that work with the first mishna of the masechet that said that if the sukkah has more sun than shade, the sukkah is no good? Is a sukkah on a boat, wagon, camel, or tree a good sukkah? Can you use it on Yom Tov/Shabbat?