you could simply ditch the rear window and get marguard replacement fitted
we do it with new fendt 939's for mulcher work and have done for 15 years now
wiper, struts etc etc works as normal and its the same as looking through the glass if you don't go too thick
plant glazing at perth do ours and it works well
just need to watch that wiper is not operated in dry weather when window is caked in mud- clean with pressure washer and it will last 6000hrs no problems
we do it with new fendt 939's for mulcher work and have done for 15 years now
wiper, struts etc etc works as normal and its the same as looking through the glass if you don't go too thick
plant glazing at perth do ours and it works well
just need to watch that wiper is not operated in dry weather when window is caked in mud- clean with pressure washer and it will last 6000hrs no problems