Zept once bubbled...
Yellow fins are good. Much easier to see than black ones.
Hope that helps,
Zept
I second that. One of the people I dive with has the Hi-Vis yellow Twin Jets... I'm always surprised at how far I can see them in the murky waters out here. I can see that long before her brightly colored tanks, marker lights, etc. Pretty cool, but I don't like how they're buoyant.