Hi John,
You probably have the best releases for Winnie fishing now. We have tried many over the years and alway come back to Scotty.
The only inprovement would be to get larger attaching cable clips. They are heavy duty and easier to open. These are used in Pccific crab pot to latch bait bags to the traps. A store called "Sportco" in Fife Waskington carries just the clips. These wont slide on the cable as the small ones do after long use.