Line for preventer?

[allene]

I use a bow cleat for the turning block. I want to add that I think it important that the line be long enough that you can release it at the cockpit and gybe letting the line free so follow the boom over to the other side, then attach the preventer on the other side after the gybe is complete. You could use two lines but you end up with a lot of line in the way of everyone for the lazy preventer.