On mine I ran the diamonds tight (not quite enough to pre-bend on its own), then cranked the downhaul when needed to depower - kept the mast from bending side to side into the slot (it'll bend on the major axis like a pre-bent mast). The boats are tail draggers - keep your weight forward, especially in light conditions. If you're anywhere near a bit heavy and it's not blowing, stand the mast all the way forward or you'll be dead downwind. If you have the original molded rudders ditch them for a set of racing blades. Upwind I ran the jib cars full back to twist the jib and keep the slot open. Downwind, cars full forward. See how it sets with your sails and adjust accordingly.