Scientific Anglers Mastery Series Streamer Express 30' Head This is one of the staff's favorite Rapid Sinking Tip Fly Lines. Extremely versatile and very easy casting & handling line! We use them on the lakefront for smallmouth and coho, down in Cabo for roosterfish, along countless reefs in Belize and destinations when looking for jacks, snapper, cuda etc and in general when we need to get flies down fast anywhere in fresh and salt water. .