15 main and 10 or 12 leader. If u do go up to the bigger gear the fish seam to shye away. Remember they get pounded all season and see a ton of gear, so u could go 2 ways, u could hook alot of fish and land a few, or u could hook a few and land alot. Most of the springs on the vedder are inbetween 15 and 25, they can be handled on the 10 or 12leader, sure u have the odd 35 or 40 but its not like ur hooking 1 an outing. My spring fishing is done with my steelhead gear. The vedder isn't a raging river either, u can almost always chase a fish, places to beef up on fish, Thompson.
my 2 pennies