When warm water tenkara fishing, it is not critical to keep the line off the water. If fishing streams for trout then you may need to keep the line off the water if your goal is a dead free drift. If your swinging flies for trout not to much off a need. Since I mostly fish lakes or ponds, I have no need for drag free drifts or keeping the line of the water. Plus, Bluegill find it real hard to resist sipping in a slow sinking critter of all sorts. Twitch the fly and watch it drop. Hard for them to resist.