Finally got to test the ROV2 after many weeks of hard work. The tether reel works great and I could easily handle 200 meters on the spool. Since the ROV2 is connected to the reel I don't need a quick connect as the entire case has wheels and is easy to transport. I use a waterproof rj45 patch between the reel and the control cabinet and I can pay out as much tether as I need.
Great job BlueRobotics!