I must admit I am not a fan of backleads, to me the only place to use them is to keep lines away from boats.
I have used them in the past to keep lines down in tight swims, but noticed indication was much reduced.
Captive backleads are probably the best way to not lose them as long as they do drop off on the take or as you lift the rod up.
I used to add and screw in Solar Indicator clips to a slightly drilled out 1oz inline lead, and a small closed steel screw eye then along came Gardner Captive backleads, which solved my problems with boaties.