for concerns regarding effects water will have splashing up at it ... ceramic coating the unit will reduce that threat and is not very expensive to do (200 or less for hot side housing ,,,, mattering on how much prep they need and how big ... i recommend white lightning coating)

concerns about crushing the unit ? build a protective brace just like rock crawlers do out of some sqaure tube steel ... there is plenty of points to attach it to and making it skidable will ensure the car skids into obstacles rather than ripping the turbo off and whatever it is attached to, like parts of the body ... does not eliminate damage but reduces it ...

still recommend anyone doing this reads up some ... talking to people and understanding the engineering behind it are two different things ... your engine will live longer if you take the later approach.