Sparky:

Sorry to hear about your accident. For a safety you could tie the shrouds to the cross bar at the hull while lifting. This would keep the lateral forces out of the equation. As the mast goes up those lines will just act to keep the mast in the center. If you would like to take the safety to the next level you could loop a line on a trapeze handle. Run that line back around the rear crossbar, under the boat and back to the front. When the mast is up you pull the line tight and tie it somewhere convenient to where you are (at the front crossbar). This will give you a nice three point stance for the mast. I think this is what Gordon was saying. Then you will have plenty of time to attach shrouds as the mast will go nowhere. I think that this whole plan will take no more than about an extra 2 minutes to implement.

Later,
Dan