“If you only have one fly line, it should be a weight-forward floating line. If you buy a second line it should be a sink tip. The sink tip is basically the combination of a floating line (on the rear of the line) and a sinking line (on the front of the line). The major advantage of the sink tip is that it will be easier to cast than a sinking line and still be able to deliver a fly deep into the depths of the body of water you are fishing.” Guide John Berry gives more good advice, this time on the versatility and effectiveness of sink tips. In the Baxter (Arkansas) Bulletin.