The retriever line would need to be slightly longer but it's best to try it first - I found mine was long enough anyway.

It doesn't snag - in fact the whole point is to simulate the kind of snag where the sheet gets pulled into the sock with the patches. This is what happened to me once and I ended up with no sheets lying on the deck and I thought "I want this to happen every time".

All you have to do is experiment on land with the length of that piece of bungee until the sheet all neatly disappears into the chute.