Metlhead,
If I’m reading this right your talking big billed divers? I do this in the sound when working around “sticky structure”. Never in the ocean. My boat is not “salty” enough for the ocean. Sekiu is about as “ocean” as it gets for me. I do this to keep a 18lb cannonball, snubber, and release, out of harms way. Mostly I keep them fairly close to the ball as they only add 10-15 feet of depth and I still have an idea where my bait is fishing. I descend slowly as I have found mag-lips or any big bill diver has a tendency to find its way back to your main line and tangle when dropping too fast. Also, I only do this on smaller tidal exchanges or slack. I want my wire and ball at almost a 90* angle and pinging on the fish finder. I’ve had varied success messing around with this. It can get real spendy really quick $$$ but I’d rather send a $10 plug into the danger zone after a fish than a $80 cannonball set up. It’s a guessing game. Electrics are a must as you’re constantly going up and down. I troll as slow as possible. If its a gravel or sandy bottom I wont even bother with a diving unit and will just put a tomic where it belongs…