I run a Dobyns 684cb, I've been throwing 17# floro on it all year no problems. I've read a lot about lighter line when fishing deeper articles. Anyhow threw a 6xd yesterday around a 12 ft hump and got stuck. Lost the bait.... to the point how much depth do you actually lose using heavier line. has there been any real research on this? The hump I was hitting was 35+ on one side and 20 on the other. Was really not expecting to get it to dig into the bottom. Besides a few patches of weeds I didn't see any structure on the screen after a few passes before I fished the spot. My point is I'm using pretty heavy line I don't see how I was able to dig a 6xd into something without deflection.

It's been said that a one-step change in line size is worth about a foot of depth.

Interesting.