Re: Question regarding oversize rod for smaller flies?
When I started fly fishing a seven weight double taper was the standard trout rod, an eight weight for heavy trout and Bass. For 25 years I had two rods, a lightweight six weight Silaflex and an eight weight Fenwick. I left the Silaflex with my Dad for 20 years, but kept the eight weight with me. I fished with that eight weight in Montana for many years until I finally got a five weight graphite rod in 91.
I caught lots of cutthroat and Bull Trout with that rod over the years and didn't feel like I was over-gunned or spooking fish, it's just the rod I had and it worked fine. Now I have rods from three weight to that old Fenwick eight wt. I think graphite changed the formula somewhat, but a six weight line is still a six and should turn over a long leader just fine.