good to hear that you are enjoying your boat! If you have substantial weight on the boat and are trying to lift a hull, have a person or two go to the leeward side to take some weight off the windward hull. It will probably be a wet ride over there though! Remember to either ease the sails or steer more into the wind to reduce power if you're flying too high.

Secondly, if you are reaching to get as much power as possible (wind at 90 degrees to your direction of travel), you should have a good deal of your crew weight at the back of the boat to keep the nose high. You'll be amazed how much effect weight placement has on boat handling and performance. When reaching in heavy air, all catamarans need to have the weight back on the far corner and most have put foot straps aft of the rear beam to make it easier to trapeze back there. You are a bit more vulnerable to capsize when reaching because you can't just turn the boat into the wind to depower. Be ready to ease the sails when overpowered and reaching because steering up or down will only help the boat fly higher!

As far as righting a turtled catamaran - you're right - get that weight on the corner. Rig you're righting line around the opposite hull and hang on to that while getting all your weight (or as much can fit) as far out on the corner of the boat that is farthest downwind - be it bow or stern. It shouldn't take too long to pop back up.