jigeye,

Repairing a canopy on the inside is not all that difficult. First separate the canopy from the cockpit. Sand the inside surface of the plexi to give it a tooth for the adhesive to adhere to. Then tape the canopy back together on the topside so everything is positioned correctly. Next glue the repair area on the inside with epoxy laying fiberglass tape over the repair area allowing adequate overlap on the cracked out area to allow for good reinforcement.

Once the epoxy is cured remove the tape from the topside of the canopy. Lightly sand the plexi, fill the stop drill holes and crack lines making sure the repairs are flush. Prime the canopy and sand with fine grit paper. Making sure any flaws are repaired to your satisfaction before applying the finish coat the color of your choice.

Re-attach the canopy to the cockpit gluing it down with a canopy adhesive or silicone.

Your good to go.

Hope that helps!