My son Jake has an X21. Trailer came apart on the highway and tore the hull up pretty bad. Have been told by the shop and someone at Express that the hull needs to be separated, the foam pulled out in order to be repaired. They recommended not repairing it at all. Insurance company is now saying they're going to cut out pieces and weld on patches. Need to figure out how to fight this as that is not the correct way to repair an aluminum boat. Any suggestions on where to start?