So recently I moved out and my boot hinge decided to break. The hinge is plastic with a metal nut encased in the plastic for the bolt to screw into. I haven't ever forced my boot closed and I am usually very careful when closing it, due to the boot being all glass. So I held the boot on with some good old bungee cord just to get home. I managed to push the nut back into the housing and filled the gaps with epoxy resin, placed the broken bit of plastic back in and covered it with more resin. I left it for a day to set then the next day screwed the nut back in hand tight, but this first fix failed. I noticed the hinge was levering itself away from the glass when it opens breaking the resin. I decided to follow what I had done the first time, but used epoxy putty to sandwich the nut in the hinge, then added a big washer between the putty and rubber seal, to give it more surface area so it would not lever itself off. screwed the nut back in and left it for a day to set. Many people have had problems with the boot leaking and not being able to find the fault, I think it must just be a design fault and my boot doesn't leak any more. Now I just need to give my Aygo a good clean.