Hey Cranky,
Just got back from Icey bay Alaska and we absolutely killed the silvers (coho) on Dipsy flasher fly combos. The 4inch dipsy is all I have ever used. The most important thing is to make sure you test the trip tension before you let out a bunch of line or you are going to have one hell of a time getting it back in! You should just have to give it a quick snap the trip it. Make damn sure you have a snubber behind it or good by fish – to much shock. When setting lines make sure the boat is motoring straight or you will be into the flat lines off the back of the boat. 3 – 4 feet of line between the dipsy and the flasher, 3 feet to the bait. Planer board rods should work awsome. Good luck on Earie. save some for me though. I will be out there next spring.