Re, the BVK rod--I think that rod is more of a medium action, so I would expect it to perform easier with the 5 weight line. I recently had the opportunity to discuss slow vs. medium vs. fast action rods with a fishing guide who I had been told was a "world-class" competitive caster, and he was of the opinion that many rods were "too fast". He said even he and other competitors often choose a rod for competition that is not necessarily the fastest action rod available, and he almost always overlines his rods. Interesting ideas. I can't help but wonder if many of us (certainly including me) would not be more pleased with a medium action rod rather than a fast one. I think one issue may be because the big name rod makers typically have higher prices on their faster rods, maybe we are sometimes led to believe they are "better". Maybe not.
George