Everyone I know, including every charter I know, uses inline boards for salmon. One of the main reasons is the ability to run different coppers and cores to stagger the depth you're working. You can't do this with big boards. You need to have your highest lines outside the spread to avoid tangles. If you tried to run a 100 copper, than a 200 copper and 300 copper on a big board, if the 100 copper took a fish, your would have to crank everything in on that side to redeploy using big boards. With inlines, you can run the 100 copper back out over top of everything. You can't do this with big boards.