When whitebeard's ship was coated so it could go under water they would bypass the marine's defenses. Couldn't whitebeard's ship have landed up against the oris plaza. Before aokiji froze the bay. It would have made a difference right. Realistically speaking would've made sense to land on marineford's island as close as possible. I know due to plot since Luffy and pirates wouldn't have to run further to get to the execution platform. Could have been a little more common sense on whitebeard's part?