Yeah fishhawk, with that old school trolling experience you have that 0 dipsey was productive to fish with,and still is.As for lures rising or falling in the water column,yes that is a very effective way to trigger fish strikes.That is why a lot of trollers make S turns to trigger bites.I was just pointing out to novices,that you can snag the bottom when lure sinks.Luckily,most of the locations we fished last year were deep enough and had a soft bottom,we rarely had to be concerned about it happening.