Different people have different styles when it comes to Points of Information. This can be very difficult to deal with and takes some getting used to. The trick is to just ignore it if possible and make your speech. If you decide to use this type of style be very careful. It has been known to annoy adjudicators if taken too far and there IS a precedence for having speakers disqualified.
Most speakers prefer to just wait and see how a speech develops.
This involves leaving weak points go and use just one or two attacking the central core of the speech once it has developed a bit. Watch out for good speakers. If someone has killed off every other speaker on your side be careful and don't assume that you can handle them. Accept someone else ideally someone who has been offering poor points all night. Points should not be longer than 15 sec.