damage to L/Cruiser 100 series Petrol

Recently returned from a great trip from Melbourne to the Louth races, Bourke and onto Hugerford and Currawinja National Park only to be holted by travel further West by welcome rain for all folks living in those areas. Only major problem was a nasty disruption to our sub-fuel tank's ability to pump by a rock/stone/log upsetting the solinoid that controls that task. Whilst I'm not up with the "nitty-gritty" I quickly learned how to stop a serious fuel leak with wire-ties half way between Ford's Bridge and Yantabulla. The road we were on was far from nasty and I have used it dozens of times before but I hear the Toyota Prado has been a victim of similar problems. My family plans next year to cross the Tanami, venture along the Gibb River Road and then the Savannah Track to Cairns and I am feeling a little nervous. Cost to repair will only be $300-400 but that is not my concern. Anyone else had this problem.
Toyota claims they have never encountered it before with the 100 series !!!
Please let the Footdoc know and I may even be forced to have a bash plate or like made up to avoid further injury to fuel supply AND pocket. "The Footdoc"