I don't really intend to be carrying any large loads on the tray, obviously you do have a point the window is at risk. What I will be doing is making some attachment point to fit a canopy over the tray. Looking back through the records, I was thinking something along these lines:
https://www.aulro.com/afvb/images/im...013/10/318.jpg
Yes, the vertical lines are where I did the heating, I had the gun set to 410degC and went back and forth until I saw the plastic change colour.
If you can, cut the guard to the width you need before starting the reshaping process.Or as a mininimum cut off the lip on one side because it is impossible to heat when it is sitting on the ground.
In terms of the order of doing things I suggest the following:
- Tighten the straps to pull the guard tightly onto the tyres.
- The lips on the guard will buckle outward, use the hot air gun over the lip, warm it up so that it is soft and then push it down evenly to remove it.
- Heat the guard in vertical strips working from the middle outwards.
- Return back to the lip and repeat by softening it again and pressing any remaining buckles out.
- Allow to cool completely and then release the straps.
I had to shift the straps around while doing the vertical strips so that I wouldn't burn them with the hot air gun.
I hope this helps!