Gimbal typically don't have the long-distance option, right? It's been a while since I've used anything BUT gimbal beams, so I may be wrong but I thought they had a shorter range than fixed.
I think they take getting used to, and then they can be very powerful in the right hands. Get in close, use them in medium bursts letting the heat subside, and make sure by the time the shields come down you have a component targeted. I use 4gB on my Vipe, and I approve of their use whole-heartedly. NPCs aren't challenging, regardless of ship type or rank. PvP is almost a different game, with people using fotw weapons until the devs realize there is some bug that leaves them without hit boxes or whatever, then everyone changes again. It's a dance I don't enjoy, so for now I'm speaking strictly of PvE.
Ah, yes, damaging components is a really nice side of beams, i smoked up some dangerous dude surprisingly quick after i finally managed to tear down their shield and targetted the power plant.
but i start to realize the errors of my ways