Due to limited river access most people don't waste their time there but I can tell you that if you know where to go during certain times coho fishing can be much better than the Crapilano because the fish are more aggressive.
A funny story... I remember many years ago(mid 90s) I worked with a guy that fished it before work sometimes timing it so that he was there during incoming tide and he could pick off incoming steelhead as they came in. There was no retention on steelhead then and 1 morning he came into work and we had all assumed he was at the Seymour that morning only this time he came in with a garbage bag and about a 17lbs hatchery buck that he wanted to dress at work. He wouldn't talk about it only that he just felt like killing something and we all ragged on him for the whole week after that calling him names like "The Violator", "Unabiding Citizen", Poacher"... just some jabs here and there because we couldn't prove if he really killed it on the Seymour.
A few days later we got into work and he had taped up a picture of him holding the same fish standing in the river with Grantham Bridge in the back ground, people that fished that river know there used to be a killer slick there. Most of the guys at the shop were in disbelief that he actually killed a steelhead on the Seymour after he would always preach to use about proper handling of fish and how certain systems need to be protected. Anyway, we all told him that he was a hypocrite and that he shouldn't have done what he did and actually another coworker whose father owned a tackle shop at the time was none too happy about it.
A few days later the guy's buddy who normally comes to visit us at work sees the picture on the wall and says, "I can't believe you kept this picture up the whole week!" and they both had a chuckle. The buddy tells us that it was caught on the Vedder the day before and that they were planning to prank a fishing buddy of theirs but tested it on us. They pointed out the fact that the fish was already gutted and looked kinda stiff in the picture, also the coloring wasn't a fresh kill.
They got us good but we still called him Poacher after that!