So Mark...Did you get that boat? You keep on posting tantalizing questions...
fwiw my preventer used to be a fender line - but have moved to a 1/2" nylon double braid (8,000lb?). Would also be interested in more experienced sailor "best practices".
Thought about the brake, but want to keep things simple and clutter-free. Otherwise too many lines!
The situation is that I test sailed the boat, and the survey is tomorrow. Until the survey is completed satisfactorily, I don't want to count my chickens before they are hatched, so to speak.
When the transaction's completed I'll post a pic or two.
I have fender line for the gybe preventer right now so it sounds like I need to get something stronger, or a boom brake! A boom brake might not be much more expensive than 60ft of 8000lb rope!