These tests they were on Lake O in 400 FOW with no current. This same setup in 4 directions and the results were the same. A bow mount electric motor was used to fine tune the speed because it is very important to have the exact same speed with no variance, bags were deployed. Tests were done on a calm day. Marked the wire in 100 foot measured intervals from a spooling machine. The diver did not have a ring and was a #1 or 107mm equivilant. Divers were run with a 4 inch spoon. Running a dodger then the depth will be far less. As an example, once we were running a rig on one side of the boat with a mag diver plus spoon and it was running 81 feet down, on the other side of the boat the exact same setup with a flasher and it was 56 feet down. Both had the exact same amount of measured line out. 30lb power pro and 30lb wire reach the exact same depth with a diver, 50lb power pro does not achieve even close to the same depth.
Any variance in speed or direction can cause dramatically different results.
These are numbers have been recorded using very regimented tests.