Since I have spent most of my 12 plus years here(yes, I know that's not long) running linehaul, dock work is part of the job. If it wasn't, I wouldn't be running enough miles to support my family. Our longest run is 163 miles one way. I understand some drive tons of miles and don't want or have time to work the dock at the fac, but for me and everyone at my barn, we need to work the dock..
Our dock workers are pretty steady here. A few come and go, but we've got a pretty good crew for the most part. We do have some 10:00am peddle drivers and some flex drivers work the o/b, but a little (10hrs/wk) OT is fine with them. Like VP said, make it while you can. You never know what changes are coming. Of course, if you don't like working the dock, kind of like if you want to work at a union shop, feel free to apply elsewhere!
Don't get me wrong Fly, if BJ doesn't keep up with other ltl's in pay and bennies, we all know what'll happen.