Really nice fish on the light rods Mic, very impressive.
I thought I was "over the line" when I went from a pair of 4 wgts. to a 3. I've not used it yet, but both 4's have caught rainbows and cut/rainbow hybrids to 5 pounds.

I would almost think a 2wgt would cast 25# mono like a level #2 line, a 1 wgt. would for sure.

Cute little browns too.
Thin water can sometimes yield some amazing fish.