Sounds just like a typical catamaran actually! Hobie 14 or any uni-rig (main only) boat acts the same. Especially with heavier weight on board.
There are techniques and backing up with reversed rudders is one of them.
Sail with power turning slowly (at first) into the wind. Try to pick a spot where the waves will push you across as the boat nears head-to-wind. That could mean starting the tack as you crest over a wave. Turning through the trough and then getting head to wind at the next peak.
As the boat slows turn the helm hard over. Release the main sheet and force the boom out several feet. You can pull the boom to weather to weather vane the hulls through the tack. straighten the rudders and crawl under the boom. (Weight forward can stall the tack as well, so aft is better than forward). Let the boat fall away from the wind before starting to sheet again. Then sheet harder as the boat picks up speed.
If you stall when head-to-wind. Force the boom forward to back wind the sail.... reverse rudders and turn the sterns up wind. Again, let it turn well off wind then start sheeting on the new tack.
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