[Joe]

The last few seasons I've done some sight fishing while deep wading at a couple other spots along the South Shore. Pretty far out - to the inside of the second bar on bluebird days when it's pretty flat and beach has been replenished by a southwest wind - the only time you can do it without a wetsuit.
I've noticed that when the blues come, a lot of them come. You'll either get a horde of them, or small groups - like 5-10. It's like a thoroughfare - you'll see bait come by then the fish.
I don't think there is much rhyme or reason to who gets there first. In a mixed school of bass and blues - the smaller bass are as aggressive as the blues.
You can get a good bass if they are there and you target them - usually you will need do something different than everyone else is doing. Everyone has heard about people using chunks on the bottom during a bluefish blitz and picking up a big bass - but I've also seen people be successful with a much more subtle technique - like working a big popper slowly or using a big danny when everyone else is throwing metal. The guy who gets a good striper when everyone else is getting blues is usually the guy whose technique represents a departure - the thinking fisherman.
I do think that if you get an occasional blue what you're running into is these small groups of fish that are running up and down the the beachfront. When you're getting blues nearly every cast; you're into a big school.