I would say in our 4 days it was about 50-50. I don't think the type of spin your herring has will change your percentage, but for us the slack tide bites produced more tules and the in-between time produced more URB's.
Tules are Lower Columbia river Fall chinook... Headed for rivers like the Kalama. They Look Darker... Almost a Brown. They tend to have a humpier back and stink strait out of the water.. The upriver bright fish are chrome just like a springer. Tules will be spawining in soon.. sooner than the URB's. Oh URB's are headed to the Tri City area. When they get to the Yakima river they look like a tule!
Ive bonked a few tules in my time and people cant tell the difference(at barbys). If their not too dark ill bonk em, taste good to me. Although, yes they do smell of copper and blood, but so do all fish if dead long enough. MHO
The fish that this fella is holding is a Tule (no offense, guys, just using your pic because it is a good, clear example of a Tule). Note the width and breadth of the fish for the overall length. Tules tend to be short and stocky. Also note the color, the big head and the extremely large adipose fin.
This is an upriver bright (URB). Ok, it was last years fish but I don't catch one like this everyday and have not yet this year. It still serves as a pretty good example of the difference.
Those of you who are fishing B10 for chinook, what would you estimate your Tule vs. URB percentage at? I seem to get more tule's than URB's and was wondering if others were seeing the same thing. I would guess my average is 70% Tule and 30% URB, however it varies from day to day.
I was wondering if I could change this by changing the herring role or something? I use a fairly tight (drill bit) roll.