One strategy, which may be overused by "long winded" speakers or those who are used to holding the floor, is designed to avoid having normal completion points occur. We all use this strategy to some extent, usually in situations where we have to work out what we are trying to say while actually saying it. If the normal expectation is that completion points are marked by the end of a sentence and a pause, then one way to keep the turn" is to avoid having those two markers occur together. That is, don't pause at the end of sentences: make your sentences run on by using connectors lik and, and then, so, but; place your pauses at points where the message is clearly incomplete; and preferably-fill" the pause with a hesitation marker such as er, em, uh ah.