Title is in french, but I'm sure you don't need any words...
can you send a link to what you bought? Sounds great. ThanksI have done exactly the same setup but with a dedicated climbing rope designed for Petzel Ascender. All bought from Mountain Equipment Coop (MEC). A separate rope with Belay Device as safety. Nobody on deck to yell at or make mistake of.
A few people borrowed my setup. It took 15 minutes to teach them. Your leg does the work, not somebody's arm on a winch. Much safer system.
Without being there, it looks like both lines are slack and not able to immediately take your weight in the event of a mishap with the other line. Good that you are safe both up and down.I Ralph, I'm not sure to understand well the part of your comment when you talk about the red and the blue line...