Big Planer Board Line

[pimplepounder]

Hey there guys.

I have never used big boards with a tow line, but I watch you guys and I have a couple questions. I understand how the line clip is attached to the fishing rod and then to the lure being towed, but when you use the clip that looks like a shower curtain clip, how do you keep that clip from traveling all the way out to the planner board? It is just controlled by how much line is out of the reel between your clip point? Another question. Lets say you have a fish on one of the middle rods, and your line is released. Do you just leave that clip on the tow line and then move your next closer rod down a notch? Thanks for any lesson.. I am a life long student...