I always wipe my film partially dry using a 'J' cloth. Only use a portion of the cloth but cut the original and use about 1/4 for 4-5 films. never had a streak, scratch or watermark since using this method.Fold it over so you have 2-4 thicknesses and place between thumb and forfinget and pull the film through in one motion.
J Cloths are cheap as chips in Tesco's, Asda etc.