Hey EM,

Depending on the damage yours has suffered, if it's cracked, use stick tape to hold it together, then fill it with plaster of paris and let it set for about 3-4 days, then you can pop it out, sand off the canopy frames, have it painted in 2-pak and then you can vac form another canopy off your plug. by sanding the fames off, you can then lay a layer or two of glass over the newly vac-form's canopy that has been covered in saran wrap ( or whatevery you guys call it in the US, glad wrap here in Oz), and make glass framework for it. then you can fix up any issues with the frame work..

Thanks

Dave