power pro line?
You should have left some mono on as backing. I'll hazard a guess this is your first time using power pro or not?
Very few line counters are dead nut accurate. I don't care. The point is repeatability. Lets say you let out 30 feet of line and attach to your down rigger. Catch a fish. Reset at the same number and your back in the ball park.
At some point in time you're going to notice line wear. So you cut off 10 feet. Real the line to the rod tip, zero the counter and let out 30 on the counter again. You could be off a foot or two. When fish are boat shy we lengthen the leads. For what it's worth when running flashers and fly's we run them as close as 12 - 15 feet. IMHO it's not that big a deal if the counter is off. Again it's repeatability.