As I recall from the extensive steelhead age sampling done in the 1980s and 1990s for early winter hatchery steelhead those fish in the 28 to 30 inch range were in the middle of the over-lap between two and three salt fish. That is roughly half would be two salts and half three salts on the average given average growth rates.

It seems in recent years like many of our salmonids sizes have been smaller than the long term average so it may be likely that the majority of those 28 to 30 inch fish are 3-salts.

Curt