I believe you have 4 basic choices.
1. Fly as you are until the rubberbands break, the wing comes off and the plane crashes.[:@]
2. Attach wing with bolts and fly like you do until wing breaks in half and the plane crashes.[:@]
3. Fly in a slightly subdued manner without the dives and stressful pull-outs.[

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4. Get a plane designed for the maneuvers you are flying.
Good luck.