Getting A Handle On Tenkara Lines

[T-stillwater (Karl Klavon)]

7:3 rods — level line or tapered line for you?

To date I have only fished 6:4 rods and only with level line. But I was thinking of trying a 7:3 rod this year, and I keep seeing references to 7:3 rods with tapered lines. For example, Tenkaraya only suggests 3.0–4.0 level line for the 6:4 Models of the Nissin Royal Stage, but recommends tapered lines for 7:3 models of that same rod. Does anyone on this forum use tapered lines with 7:3 rods? Or even with 6:4 rods? If so, why?