Originally Posted by
Roy Page
Can only comment on ReefRunners, which have an unassisted max dive depth of somewhere around 25ft with well over 100 ft of line out.
To get them down to 40 ft and more, we use a weight forward drop weight hanging on the line with a rubber band.
We let out 20ft, then put either a 2oz or 3oz drop weight on the line and then let out to whatever length gives us the depth needed.
I have a chart which we made up and I will try to post it here later when I put my hand on the original.