It's 70% hoist, 70% LP. with a high clew (sheets to existing track). I've had it up once in 40K of breeze, worked fine. Cloth is 10.5oz. Boat is Tartan 30.
Oh yeah, for your trysail - remind the sailmaker NOT to put in battens (or any roach for that matter). I had to help out a friend with a trawler. His sailmaker had made him a steady sail with roach and batten pockets, but didn't supply battens. Fortunately, I had some old ones, a hacksaw, and a file.