Oh, the secrets I am letting out on this site!
The new tot seemed to dive about the same depth as the old one, the action was just slower. They dive to 10, maybe 12 feet depending on the current and line being used. Don't try them in deep holes as they will never get to the bottom. I like the thin lines because they seem to dive better, but you have to watch them for nicks. Thin lines are not the best at Buoy 10, but that is another topic.
Color? Well, you saw Leroy say he had success with the Blue Pirates. I personally like to send different colors out. I remember an old "Fishing The West" episode featuring Bob Toman where he told Larry that "Any color will work, as long as it is blue!" We have done best with the green pirate, but it might be because we fish it more. I like that red with black back. Or black. Or green herringbone. Or orange when the water has been off color. Ahhh, they all probably work!
The best thing is finding a good run to work them, have a good bait and spin n' glo or something else to keep the bait floating and put your rod in the holder.
I have had lots of friend insist on holding the rod only to lose a fish because they feel the bite and pull back too soon. The rod holder ensures the fish makes a good take before you pick it up and the fish hooks itself. I always tell them if they just have to hold the rod to "act like a rod holder then!"
Tight lines!