Back in the day when I was attempting to be a precision fisherman, but was flat broke, I would pull off line in the drive and measure out a specific length and put a bobber stop on it. I did this to get an idea of how much line to let out for cranking without buying line counter reels. You could do the same thing with jigging poles. Put a bobber stop at 24 or 25 feet since a rod length would get you an accurate length to 10 or 12 feet.
BTW, still flat broke, and have given up precision fishing.
RCC's Crappie Eradication Service
Eliminating your slab problems one fish at a time
For free estimates give us a call at O U 812.