I've used to bar fish a lot in the the lover Frazer for Coho. Here are some tips that I find help.
Be careful when buying prepackaged bar rigs (and I always buy them). Often they have "t"s that are far to short for my liking. Really, the longer the "t"s the better as far as I'm concerned. It lets you use longer leaders on your hooks without them wrapping around the rest of the rig when casting.
Use fairly heavy hook leaders, but not any heaver then your mainline. If you hook the bottom it's better just to loose a hook and not the whole rig! Heaver leaders helps them not to tangle.
If you like fancy things, tie a snap swivel to the end of the hook leader rather than tying a loop. It lets you bait up your hooks while some are still in the water. Reel it in, change the hooks, cast it out again. If you bust off a hook it's usually at the knot on the swivel and not your main line. Snagging your lead is a different story