Ahhhh, not to worry about the size of the fish, you adjust your 'gear' accordingly. Pacific Northwest is a total hoot as to what is the 'appropriate' rod size. Where are you, what are you fishing for and you could be from a 1wt (6' Baby Boo) rod to a 10. Home water is the Rogue River (Southern Oregon) and we have several runs of Pacific Salmon, and those can go to 50+ pounds. Upper river? Trout at a half pound, and everything in between the two.
You just 'gear up' as appropriate. Interesting to hook a Pacific King Salmon on a 3wt rod .... NO CONTEST!
Damned things will take the same small flies you'd use for "half pounders" as we call them on the Rogue.
Whole thing take less than 20 seconds or you've got a 4 piece rod into far more bits and pieces .......
Edit: The 1wt will be where the Kings/Steelhead can't get. A 5wt? ... lots of guys, me to, will 'go there' for Summer run Steelhead with low water fishing conditions. Not at the moment for me, but that's what 'Fishing Pard' uses in all but the most extreme flows. But Rich has this small bit of water 'wired.' If 'there's a Steelhead, he'll probably hook same.
Would take very little attitude adjustment to learn how to 'hate' this guy. He/this bit of water (and I do mean 30 Meters) is 'wired in.' He knows every bump on the bottom like he ... well, lets not go there .. Porno stuff.