I am pretty much with RA3

Year around I use the same lines and never change do to water conditions. I do however lighten up on leaders in clear water somewhat.

12 lb Andes on bait casters for drift fishing
30 lb power pro on plug rods and float rods
10 lb Izor line on spinner rods

If I am using leader in gin clear water I only go as light as 8 pound test. In winter I mainly use 10 lb test leader.