20 Year Notus System
Captain Simon McDowell of the FV Daroni in New Zealand has been using the same Notus system for almost 20 years. They use Catch Sensors to determine when to take back the trawl. On occasion, they even use their sensors to locate a lost trawl (due to the Notus Active Technology).
See an interview with Captain McDowell here compliments of Marintec.